Saturday, April 10, 2010

What is pain?




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What is pain?

Pain is a natural systemic reaction. In its basic form, it is a beneficial phenomenon. Without the ability to feel pain humans would not be prepared for situations that can cause bodily injuries. Pain helps humans to learn to avoid dangerous stimuli.

Pain is an uncomfortable feeling that tells you something may be wrong in your body. The sensation of pain is formed when the nerve endings that sense pain are irritated. This is the case, for example, when there is beginning tissue damage. Active substances that irritate the nerve endings are released in this specific area, and they cause a local inflammatory reaction. The irritation is transmitted via nerves to the spinal cord and then higher up to the central nervous system, where the sensation of pain is first formed.

Organs have different nerve endings, and the pain impulses travel to the central nervous system via various nerves. The nerve endings on the skin transmit pain quickly and the pain perceived in the brain corresponds clearly to the origination site. There are fewer nerve endings that sense pain in the internal organs, the impulses travel via slower neurofibrilla, and it is more difficult to locate the pain originating from there.

Short-term pain is called acute and long-term pain chronic pain. Persistent pain sometimes has no useful purpose; it may be just a nuisance. However, it may affect the ability to work and have a negative effect on life.

Different mechanisms that can strengthen or weaken the pain impulses exist at the pain origination site, on the way to the central nervous system and in the central nervous system itself. Generally, the tissue damage that caused the pain will heal, but if there are several factors that increase the pain level, the nervous system may become programmed wrongly, and the pain may become chronic.

The factors that can make one prone to chronic pain are lack of activity and a sedentary lifestyle, long time illnesses, sleeplessness, a learned behavioral model or continuous additional stimuli and psychic factors. Pain processes are linked with the emotional centers in the brain. If a person is depressed or anxious, it may worsen his pains.

When pain becomes chronic, it will be much more difficult to treat and the treatment outcomes are worse. Thus treating pain at the right time efficiently and appropriately is the best prevention of constant pain.

Pain News

The same painkiller is not effective for everyone


The Cochrane Library published an overview of 350 published reviews with 45 000 participants concerning painkillers in pain following surgery or removal of wisdom teeth. No drug gave good pain relief for everybody. The best result was pain relief in 70%, the worst drugs alleviated pain only in 30% of the patients.

Ibuprofen, diclofenac, etoricoxib, celecoxib, naproxen and codeine with paracetamol, gave good pain relief. Etoricoxib, celecoxib, naproxen, diflunisal and oxycodone with paracetamol had a duration of action more than 8 hours.

The results show that several pain medications and combinations thereof, are effective for many, but none of the drugs guarantees relief for everyone. Therefore, one should not be too surprised if they is no immediate good enough analgesic effect. In this situation the drug should be changed to another.

Pain as art

A collaboration with pain specialist Professor Joanna Zakrzewska, Deborah Padfield and facial pain clinicians and patient at University College London Hospital, produced an exhibition MASK:MIRROR:MEMBRANE. It gives sufferers a voice and studies pain as art.

Other painters have also tried to illustrate their pain.
Place for pain exhibition.
More pictures of pain art experience.

Friday, April 9, 2010

Cancer Pains



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A tumor or its metastases cause pain in half the cases. The nature and magnitude of the pain depends on where the change is taking place and how extensive changes in the tissues are.

Pain is the first symptom in about a quarter of cancer patients. A metastasis-stage cancer causes pain in 70 percent of the patients.

Pains are usually initially felt where the tumor or its metastases are. Active substances are secreted near the cancer cells, and they increase swelling of tissues and pain. Majority of the pain is directly caused by the tumor. However, pain in cancer patients may be caused by other factors such as migraine or degeneration.

The most common reason for cancer pain is a metastasis somewhere in the skeleton. Sometimes irritation of the nerve tissues, increased intracranial pressure, and stretching of the membranes enveloping internal organs may cause pain.

The pain caused by a skeletal metastasis is usually a constant, aching, dull pain. If the pain suddenly gets worse, it may be caused by a bone fracture due to the tumor’s weakening effect on bone structure.

If nerve structures are pressed, the pain caused is usually a solid, burning or tearing pain and examination shows changes in the functioning of the irritated nerves.

The tumor or metastasis may provide pains because of the pressure on organs, nerves, bones or other structures.

Cancer may cause lockage of an organ or tube in the body. There may be pains by infection, irritation, or changes in the circulation.

Side effects from chemotherapy, radiation therapy, or surgery may also be painful. Long inactivity can cause stiffness and pains, and depression or anxiety may increase its strength.

Best treatment for cancer pain is procedures that cause the tumor to disappear or to be reduced in size. More and more tumors can be fully cured by surgery, medical and radiation therapy.

In situations where a curative treatment is not possible, the pain can usually be alleviated. Radiation therapy brings a rapid reduction in pain levels. The more sensitive the tumor is to radiation, the higher the pain reduction level. In cases of skeletal metastases, the pain may be reduced in a matter of days.

Radioactive substances that accumulate in the tumors have been used in addition to the conventional radiation therapy. They also reduce pain. Pain in rapidly dividing tumors may be controlled, even quickly, with the help of pain reducing medication.

Medication can also be used to relieve the pain without its having an impact on tumor growth. It makes sense start with milder medication and continue to stronger medication when necessary.

Because pain caused by cancer is ongoing, the medication is dosed from the start over 24 hours. The goal is a pain-free state and pain is not allowed to return until the next dose is administered. This helps to control the pain with less medicine from the beginning, vis the situation, if waited for the pain to become severe.

A wide range of pain medication from anti-inflammatories to strong medications in the opiate line is used. Oral administration is usually the easiest. In addition to injections and intravenous administration, it is possible to give medicine continuously via a subcutaneous pump or by administering it directly into the vertebral canal.

There may be pain even after successful cancer treatment. It may appear after surgery or radiation therapy. A chest surgery will create residual pain for 40 percent of patients for six months following the surgery. Some of these cases will require pain management. About a quarter of mastectomy patients will experience difficult prolonged pain after the surgery.

Infections and pain



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Common Cold

Muscle and joint pain often accompany upper respiratory infections caused by viruses. The other symptoms commonly include fever, fatigue and nausea together with coughing, congestion or sore throat.

The muscle and joint symptoms are usually mild, and their locations may change during the illness. As the illness passes, the pains go away. Nothing out of the ordinary is found in the joints or muscles.

Treatment consists of standard medication for cold. The anti-inflammatory and pain reducing substances in them will alleviate pain in the muscles and joints. However, medication cannot be relied on to prevent a cold, and it does not have an impact on the duration of symptoms. Rather, it helps the patient feel better until the illness is over.

Influenza

Influenza is usually epidemic in nature. In that case, a large number of people fall ill in the same country, and the disease circles the planet until it dies down.

Influenza may be caused by viruses A, B, or C. Nowadays, the occurrence and movement of different strains of influenza around the world are tracked, and this helps in developing preventive vaccines that reduce the number of serious complications.

The clinical picture of influenza can be terribly harsh. It includes high fever, headache, and severe muscle pains. Complications may be dangerous and even fatal to old and sick people.

Treatment includes symptom-appropriate medication for fever and pain. Make sure to drink enough liquids. Get vaccinated unless there is allergy to eggs.


Erysipelas

There may be infections around the body, and one the most common ones is erysipelas, which is caused by streptococcus bacteria.

The symptoms of this disease include a clearly confined redness, burning and possibly swelling. The patient gets a high fever, and the area may be acutely painful. Usually the skin is intact.

Erysipelas is most common in the legs. Bacteria enter the system via a wound, typically through broken skin between the toes caused by foot fungus.

Treatment consists of resting the infected area, antibiotics and local treatment of the fungal infection between the toes.

Folliculitis

Folliculitis is possible in a hairy and sweaty area of the skin. A person may be predisposed to it if he comes to contact with oils in his work, has diabetes or is on cortisone treatment. The infection is seen around the follicle in the form of redness and swelling. A boil may eventually appear on the site.

Treatment consists of careful daily washing and showering. Use local antibacterial ointments. Antibiotics are also a treatment option.

Boils

A boil may develop due to infection in subcutaneous tissues or contamination of the skin. This initially shows like a local bump, pain, and redness. Fever is likely. When pus forms, the bump becomes soft.

Initial treatment includes warm compresses and antibiotics. When the boil becomes soft, lancing makes sense. It also reduces the pain.

Avoid picking pimples on your face, especially near the nose, because this region has a direct connection to the blood circulation of the brain and may increase the chance of an infection spreading to structures inside the skull.


Herpes Simplex

Type 1 herpes simplex virus causes infections near the mouth and on the skin, and type 2 in the genitals. Initial symptoms may be very mild or quite severe.

The symptoms around the mouth usually begin as itching and burning pain. Small blisters develop shortly thereafter, and they are covered with scabs in about a week. The condition is often prolonged with an accompanying bacterial infection.

Treatment consists of locally applied herpes medication. The earlier its use begins, the better it works. If there is an accompanying bacterial infection, antibiotic ointments are required.

Shingles

Herpes zoster or shingles usually appears on the chest and stomach, sometimes also in the facial area and near the eye as a blistery and painful rash. The varicella zoster virus that causes it, resides in the spinal cord.

The rash does not cross over the median of the body and is found in the area of only one tactile nerve. When the rash heals, it may leave a scar and sometimes also problematic residual pain.

Normally the opportunity for post-rash pain is small for those under 50 and for those who had little pain at the onset. Those who had fewer than 20 blisters at the beginning have a small probability of post-rash pain.

Treatment may include medication effective with viruses and sometimes also cortisone for those who have a high risk of post-rash pain. Otherwise, the effort is put into preventing an accompanying bacterial infection and controlling pain.

Generalized pain




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Rheumatoid Arthritis

If a person has generalized pain symptoms and pain in several locations or almost everywhere, the sufferer starts suspecting the risk of rheumatoid arthritis. This usually, however, is not the case—normally diagnosis of generalized pain condition points to something benign even when there is pain all over.

Typical rheumatoid arthritis begins with progressive joint symptoms. First symptoms appear in the knuckles otherwise called the metacarpophalangeal joints, in the joints between the first and second finger bones otherwise called proximal interphalangeal joints of the fingers or in the base joints otherwise called metatarsophalangeal joints of the toes, in ankles, wrists or knees. Rheumatoid arthritis typically causes swelling of several joints both on the right and left side simultaneously.

The inflamed joints are tender and stiff, especially in the morning or when not used for some time. There may be a burning sensation in them and they may become warm. In addition to joint inflammation, irritation may be experienced in the attachments of the tendons to the joints and inflammation of the mucous bursas near the joints. In the long run, if the disease progresses, the range of motion in joints limits, and they may deform.

Symptoms preceding the onset of illness include fatigue, appetite and weight loss, fever and some other symptoms seen with many other illnesses. Because this disease is by nature a systemic connective tissue disease, the patient may experience varying symptoms.

The basic cause for rheumatoid arthritis is still not fully understood. It is thought to be an autoimmune disease, in other words a confusion of the immune system. The immune system participates in defending the body, among other duties. In autoimmune diseases, the immune system takes healthy tissue as foreign substances and, as a result, attacks its own body. An infection may play a role in the mixing of the immune system and the onset of rheumatoid arthritis.

The clinical picture is often the main tool for diagnosis. Laboratory tests may show changes characteristic to rheumatoid arthritis such as an increased sedimentation rate. The rheumatoid factor level may be higher, but this may be the case also in a person who does not have rheumatoid arthritis. Over time, x-rays show changes in the finger and toe joints that are compatible with the condition.

Medication plays a key role in rheumatoid arthritis. Early start improves the treatment outcome. Treatment should be left to an experienced rheumatology specialist. The outcome of treatment varies from person to person. Some patients have an aggressive form of the disease; others may have fewer symptoms over time. In cases of rheumatoid arthritis, it is necessary to maintain mobility of joints by using the joints in a manner that is appropriate with each stage of the disease.

The systemic connective tissue disease group includes as well other, rarer diseases .


Post-infectious pain

It is common to experience joint, tendon, or muscle symptoms after various infections, particularly in the case of intestinal or urinary tract infections. Post-infection symptoms that cannot be easily connected to the infection often appear after the infection.

Post-infection joint symptoms are present in only a few joints simultaneously and usually asymmetrically. Muscle and tendon symptoms may vary widely.

If these symptoms remain for a long time, a doctor should be visited. Most post-infection symptoms require no treatment and will go away in time. Some may require treatment to ease the pain they cause.

Lyme disease

Borreliosis otherwise called Lyme disease, which contracts via tick bites, may cause joint symptoms. If there is a ring-like outwards expanding rash in the area of the bite, a doctor should be seen immediately. Other symptoms in the initial stage may be fever, headache and fatigue. The disease is easily treated with antibiotics at this point. If one does not detect a rash, or it does not appear in a typical way, the disease can be diagnosed with the help of the clinical picture, the findings, and the serological blood test showing increased antibodies.

In the later stages when bacteria spreads by circulation, these outwards expanding circular rashes may arise at various sites of the body even far away from the site of the first bite.

There may be later muscle and joint symptoms and symptoms in other organs including the brain, nerves, eyes and heart. The later the disease is diagnosed, the more complex the treatment and the more uncertain the results are.



Fibromyalgia

Fibromyalgia has been a generalized pain syndrome in the center of attention in recent years. Fibromyalgia causes a wide-ranging pain and a painful response to pressure accompanied by other symptoms such as weakness, sleep disorders, and morning stiffness.

The pain in this generalized pain disorder is typically a dull, vague ache. Often one area is more painful than others are. According to some research, the first symptoms appear most often in the area of wrists and hands. Powerful fatigue is common and may be present onwards immediately after waking up. Sleep disorders include waking at night and difficulty falling back asleep.

Many patients with fibromyalgia also have other symptoms such as irritated colon, tension headaches, muscle spasms and twitching, weakness in the limbs, menstrual problems, an impaired concentration and memory, depression, anxiety and heart symptoms.

A doctor’s examination shows particularly severe pain in typical points in several different areas. The doctor has to exclude other illnesses and generalized pain causes that can offer similar symptoms. Only after that can the fibromyalgia diagnosis be made.

Physical therapy may worsen the condition. Massages, such a lymphatic massage, work for some patients. Cold compresses may be helpful.

Sleep disorders should be reduced with medication. Anti-depressants often work well here, as they have the best effect on fibromyalgia-related sleep disorders. A lower dosage is usually sufficient in the case of fibromyalgia.

Treatment often does not make all the symptoms disappear. The main issue is not to let the disease control everyday life. A normal life and moderate use are beneficial. The worst possible alternative is to stay at home alone and mull over the pain.

Similar wide-ranging mild symptoms may be associated with many other conditions. If the problems of wide area pains stay for a long time, a doctor´s check should be organized.

Self-treatment for fibromyalgia includes OTC anti-inflammatory medication when needed and ointments for the painful areas, if they are helpful. Cold compresses 20 minutes at a time several times a day may be useful. Sometimes heat pads work better.

In some people, taking saunas aggravates the symptoms. A long cold shower, after a sauna or bath, may reduce the next night’s misery.

A overall good fitness form should be held. When one is in a good condition, the pain is usually milder, and it is tolerated better. Aerobic exercises should be done for 20 minutes three times a week, in a way that pulse rate goes up. Swimming, walking with or without poles, biking, gym or group exercises are usually tolerated well enough.

Anaerobic exercises causing lactic acid to build up are usually tolerated worse. In persons suffering from fibromyalgia, muscles get sore more easily this way. In general, the exercise intensity should be raised gradually and not too fast with this condition because the muscles get easily aggravated.

Warm baths and salt baths help some. Whirlpool baths may help. Winter swimming keeps the symptoms in check for some people. Temporary extreme cold treatments in special treatment rooms have also been used for this condition. Traditional tempering treatments may also work.

Fasting alleviates the pain temporarily. Vegetarian diet works for some patients. It might be worthwhile to have a diet diary and track the impact of diet on the pain symptoms.

A warm and dry climate with few daily changes suits some patients better than the northern cold and humid climate. This is true especially in spring and fall, when the weather can change quickly, and many people travel to warmer countries from the colder regions during these seasons.


Generalized Pain in Children

Also in children there may be generalized pain Healthy children may have pain in the bones, joints, and muscles. If there are other complaints and findings like losing weight, fever, fatigue, severe local pain or findings in the joints like restriction of movements or swellings, a doctor should be consulted. Growing pains and variations, traumas or overuse, may cause benign pains for a long time.

See a Doctor

Obvious swelling in a joint.
Pain and an earlier tick bite.
All prolonged wide-ranging pain.
Pain that makes everyday life difficult.
Pain that worries you.

Generalized pain, more information:

Mayoclinic.com pages on rheumatoid arthritis.
webMD about rheumatoid arthritis.
Medicinenet.com slideshow about rheumatoid arthritis.
Mayoclinic.com pages on fibromyalgia.
RightHealth.com about fibromyalgia.
ArthritisResearchUK pages on fibromyalgia.
Familydoctor.org pages about Lyme disease.
Emedicine pages about polymyositis and dermatomyositis.
KidsHealth.org about growing pains.

Calf, Ankle and Foot pain




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Calf, Ankle and Foot pain

The legs continuously carry the entire weight of a person and ankles and the feet take care of contact to the underlying surface. The Lower Leg consists of two long bones. The tibia or the shinbone is the larger one and the fibula or the calf bone is the smaller bone located on the outside of the leg. The calves have strong muscles. The Achilles tendon connects the calf muscles at the back to the heel bone. The ankle joint connects the lower ends of the tibia and the fibula in the lower limb with the foot. From the ankle down, the foot consists of 26 bones. This structure makes movement to be possible in various situations.


Calf pain

Muscle pain


Calf muscle may be painful pain due to too much of exercise and lack of stretching. Sudden strain on unprepared calf muscle or a direct blow can also cause calf pain. Excessive running up the hills is often a considerable stress for calf muscles. Certainly some soreness in the muscles is a normal situation after training.

If treatment is needed it is easy and results are favourable. In the beginning, complete rest is needed until the pain and tenderness go away. It may take some days or a week or two. Cold packs in the beginning are useful. They can be applied several times a day for 15-20 minutes at a time. Later on heat may offer a better result. Massage and stretching can be used to relax the muscles. Calf muscles are easy to massage yourself. It should be done with gentleness without excessive force. Also over the counter pain medication are available for self treatment if necessary.

Shin Splints

Shin splints or tibial stress syndrome is a term used to describe pain at the front of the lower leg. Athletes often have problems with the shins and calves due to muscular growth after exercise. When the membranes surrounding them do not grow at the same rate, the muscles have to function with this increased pressure and this may cause pain. Shin splint pain is considered to be born from overuse or repeated pounding of the feet stressing the tibia and surrounding muscles and causing irritation. Flat feet or inappropriate footwear may predispose to this problem.

Shin splints are an example of this condition. With shin splints, initially pain during exercise may be experienced in the inside area of the tibia. Shin splints normally do not develop right away, but, for instance, after a extensive training period. Problems usually start after excessive aggressive training in sports or for example in the army during basic training with a lot of marching. As the problem gets worse, the pain is felt after each exercise session and sometimes it lasts for hours. Examination shows tenderness on the inside of the tibia. The shin muscles may feel tender as well. Sometimes x-ray or MRI I needed to eliminate stress fractures and other possible conditions.

Treatment includes taking a break from exercise. Anti-inflammatory pain medication and cold compresses are useful. Discussion with the coach should be held whether it would be needed to change the running style, for instance. Attention should be paid to muscle tone and stretching. If the situation does not improve, surgery sometimes can be used to make more room for the muscles by opening the membranes surrounding them.


Restless Legs

Restless legs are a condition where there is nighttime shivering, tingling, pain or burning in the legs that forces the sufferer to get up and move the legs in order to relieve the symptoms. Moving the legs gives at least a temporary relief. It is customary to have also limb jerking during sleep.

The disease usually affects both legs. Moving the legs or taking a short walk will calm the symptoms. Examination may not prove anything unusual in the legs. Rarely the underlying cause may be diabetes, sciatica or anemia. Repeated nighttime waking may lead to insomnia.

Diagnosis bases on the typical history and doctor´s examination. Sleep registration is rarely used. Sometimes nerve conduction studies and EMG may be needed to exclude other conditions.

The cause for this condition is unknown. Hereditary may play some role. It is thought to be connected to chemical changes in the brain, beginning nerve degeneration in the legs or beginning circulatory problems.

Self-treatment includes walks before going to bed. This may reduce the nighttime symptoms. Sleep positions may affect the condition, so try several to see which works best. Heat or cool footbaths help some of those suffering from this condition. The legs should be warmed carefully with the help of a heating pad and kept warm with socks at night. Smoking should be stopped as well as using excessive coffee and alcohol.


Intermittent Claudication

Intermittent claudication is the name for the symptom with an aching pain in the calves—more rarely in the thighs or gluteus muscles—when walking. It is caused by reduced blood circulation due to arterial calcification and narrowing and hardening of the arteries. It is one manifestation of the peripheral artery disease, a common problem of men over 50. The risk factors are among others elevated levels of cholesterol, diabetes, coronary artery disease, high blood pressure and smoking.

Walking causes the muscles to require more oxygenated blood and the calcified arteries cannot deliver enough blood, which causes the pain. In the beginning, the pain may appear only when walking faster or longer, gradually symptoms come with less strain.

The legs get cold easily and look purple. If blood circulation is particularly poor, the legs look pale. Nighttime pain and coldness may be an indication of threatening gangrene.

Examination shows lack of pulse, and listening with a stethoscope reveals a shushing sound in the veins that are blocked. Intermitted claudication is examined using the ankle-brachial index meaning relationship between blood pressure in the arms and legs. Doppler ultrasound is used to measure flow in the arteries. If operation in considered angiography, magnetic resonance or computer tomography angiography may be used to get a better understanding of the arteries involved.

Treatment consists of moderate walking and keeping the legs in superb condition. If walks become terribly short, surgery may be considered. Quitting smoking is essential so that blood circulation in the legs will not be further reduced.

Drugs are used to relieve pain, keep the blood from forming clots in the arteries and to lower elevated cholesterol. Also, a medication to enlarge the affected arteries may be used.

Self-treatment includes walking at least an hour a day. Walks should be continued to the point where the pain becomes quite strong. After a brief pause, as the pain subsides, moving can be continued. A good way to strengthen the calf muscles is to walk up stairs and to make specific exercises for this at the gym.

Neuropathy

Diabetes, use of alcohol, rheumatic arthritis, kidney insufficiency and various chemical substances may cause nerve damage in the legs and therefore pain.

The nerves in the legs are the longest in the body. This is why initial changes in nerve function often are demonstrated there.

Leg pain is often associated with diabetes due to leg neuropathy. Diabetes may develop nerve damage throughout the body. It is able to do damage to the blood vessels carrying oxygen to nerves and also to help factors that cause inflammation in nerves. Those who have had diabetes for a long term will feel pain more often, but new patients may experience it also. Sometimes starting diabetes medication makes the pain to be worse.

The pain is like a toothache, felt deep, burning or piercing. Numbness or tingling may accompany the pain. In the long run there may be also wasting and weakness of the muscles of the feet.

Examination shows changes in the leg reflexes as well as weakening of vibration sense. Nerve conduction studies and EMG can usually confirm the diagnosis.

Treatment is often difficult. Taking excellent care of the primary disease is essential. Anti-inflammatory pain medication and physical therapy may work. Electric therapy for the legs and acupuncture may be worth trying. Neurological medication such as anticonvulsants and antidepressants may help. Severe cases may require anesthetic procedures and an electric therapy device placed in the spinal cord.


Embolism and Thrombosis

An embolus or a blood clot loose in the arteries may sud denly block circulation in the legs. The embolus usually comes from the heart, aorta, or through a hole in the septum from the venous circulation side. The obstruction of the blood vessels prevents tissues from getting blood and oxygen and may lead to death of the starving tissues.

Main symptom is a sudden, severe leg pain. The leg becomes lighter in color, cold and numb. Examination shows no pulse, coldness, numbness, and a pale or marbled skin. There may be also muscle pain and spasm and lack of movement in the leg.

This situation requires emergency vascular surgery, because a leg will not be able to survive without blood circulation for long. Various tests and imaging techniques are available to detect embolism and to discover the source. In addition to surgery, treatment may also include intravenous procedures such as thrombolytic therapy and medication.

Results of the treatment depend on the location of the embolus and the promptness of the treatment. Arterial embolism is dangerous if not treated quickly and can lead even to amputation.

Venous thromboses are also seen in the legs. Their risk increases for instance during long flights. In this ailment, there is pain, swelling and burning in the leg. Doctor´s examination, ultrasound and a contrast medium x-ray examination, lower extremity phlebography, will help diagnose this condition. If a venous thrombosis is suspected, a visit to the emergency room is necessary. The leg should remain immobilized during transportation to the emergency room.

The veins return blood to the heart and a clot from the veins can be transported to the right side of the heart and further into the lungs. A pulmonary embolus is a serious illness and can lead to death if not diagnosed and treated like an emergency.


Ankle pain

Sprained Ankle


The ligaments of the ankle joints are easily sprained. They have some elasticity but if stretched outside their limits they are sprained or torn. The ankles have the least support when they are fully extended. An ankle usually twists inward, which injures ligaments on the outside. The injuries vary from sprains to a complete tear. When the ankle twists outward, injury to the bones is more common because the inside ligaments are so tough that the bone will break before they tear.

After the injury there may be local tenderness and swelling and maybe some limitation of the movements in the torn ligament fibers. If there is a complete tear of the ligament, or a fracture there may be additional movement in the ankle joint when tested.

Diagnosis is made with typical record of events and doctor´s examination. Sometimes x-ray is needed to exclude fractures. Jn more complicated traumas MRI may be needed to be able to determine the best treatment options.

Fresh ligament tears are usually treated with an adhesive binding. Rest is usually needed and walking should be limited for some days or weeks. Cold packs several times a day for 20 minute or more and pain relieving medication can be used as self treatment. If function level does not return to normal soon after the injury, physical therapy is needed to improve it. Surgery is rarely used for this condition.

After the acute pain episode related to sprains, the functioning of the ankle can be improved with exercise. One can start by moving and rotating the ankles in all directions, then stand on the toes and heels. A small step can be used under the forefoot in this exercise if a wider range motion is wanted.

At a later stage, a balance board is beneficial for improving ankle function. Gym exercises with a personal trainer or a physiotherapist offer an opportunity to gain increased muscle power to keep the ankle in optimal shape for the future. With the adequate treatment the results are good and usually there remains no limitation of earlier activities.


Arthritis

Arthritic changes in the joints of the ankle and foot are not as usual as arthritis of the hip or knee. In the ankle joint also in other 30 joints in the foot there may be osteoarthritis, wear-and-tear arthritis or degenerative joint disease. With it the cartilage of the joint is wearing off with age. After this the bone surface is exposed in the joint and the joint becomes progressively more painful and stiff. Hereditary causes may play a role in the development. Also overweight, injuries and fractures in this area predispose to this disease.

The second type is inflammatory arthritis. It can be caused for instance by rheumatoid arthritis or some other systematic disease. This is a system-wide disease and there is usually pain in other joints and other symptoms. The diagnosis can be confirmed by doctor´s examination and laboratory tests.

When arthritis is present, the affected joint may feel sore, raspy and stiff when moved. There may also be tenderness and swelling of the joint, reduced movement in it and difficulty of walking. X-rays or MRI can confirm the diagnosis.

Achilles Tendinitis and Tendon Ruptures

The Achilles tendon, which is attached to the heel, may rupture or become inflamed from overuse, strenuous exercises or other stress to the tendon. It is a remarkably strong tendon and it takes a lot of power or misalignment to make it tear. A tendon rupture can be partial or complete. An inflamed Achilles tendon feels painful and there may be swelling or thickening at the back of the leg and above the heel. There is often pain in this same area when running longer distances or sprinting. Stiffness in the morning along with a scratching sound may follow. An inflammation generally follows a more straining exercise.

Tendinitis treated with anti-inflammatory drugs, cold compresses, and rest. A cortisone shot may be needed. If this does not return full function of the tendon, surgery is an option. If not treated properly degeneration and prolonged problems may continue to bother.

The pain with the ruptured Achilles tendon is usually more intense and sudden. One may hear the sound of the rupturing tendon when the injury occurs. It may be impossible to walk on the toes and put weight on foot on the side of the trauma and walk normally.

The rupture may follow a rapid surge of strain on the tendon like occasional unaccustomed sports, stumbling or stepping into a hole.

Diagnosis is made with doctor´s examination, typical history and findings. Sometimes ultrasound or MRI is used to define the scope of the inflammation or the rupture or the tendon. Partial ruptures may be treated with cold compresses, medicine, cast and rest but complete ruptures are usually operated.

Pinched Nerves

Nerves may get pinched behind the bump on the inside of the ankle causing a condition called tarsal tunnel syndrome. An injury, a heavy shoe, rheumatic inflammation or an incorrect position of the ankle may cause this condition.

Main symptom is a burning pain, not associated with walking, on the midfoot, around ankles and sometimes on the toes. Pain worsens with activities and when standing for a long time. Pressing the nerve path under the bony part on the inside of the ankle can mimic the pain and sense of electric current. A neural pathway examination, EMG confirms the diagnosis.

Treatment consists of eliminating the wrong position or other aggravating factors. Surgery performed to release the nerve is very rare.


Heel pain

Fat Pad Syndrome, Plantar Fasciitis and Heel Spur


Humans have a padded cushion under the heel bone, and it gets less elastic with age. Some may have congenital defects in it. This area may become irritated or pad may be bruised due to injury or physical exertion. In this case, examination shows tenderness directly under the middle of the heel bone. The ailment is called the fat pad syndrome.

Treatment may include adequately soft shoes that have flexible soles, or a soft heel pad placed in the shoe. This changes the stress point and adds more padding to soften blows. The painful area can be treated with a local anesthetic or cortisone. Lose weight if you are overweight. Try changing the way you walk. Prolonged pain may be problematic in professions that involve a lot of standing.

The weight of the leg normally rests on three points: the heel and the bases of the little and big toe. These points are prepared to carry the weight. The lateral and longitudinal plantar arches are found between the big toe and little toe bases and the heel. If this situation changes when, for instance, the arches fall or when the foot twists in some direction, it may cause various problems.

A falling longitudinal plantar arch causes stretching of the tissue band connecting the heel bone to the base of the toes. This may give rise to an inflammation of this tissue band and cause a condition called plantar fasciitis. Doing too much running or jumping can provide additional irritation. In the long run this may cause an osteophyte or a spur to grow in the area of attachment of the tendon to the heel and the area itself may be painful. In this case the spur is the result and not the cause. Examination shows localized tenderness in the front part of the heel bone. Treatment consists of rest and possibly local administration of cortisone.

There may also be inflammation and pain in a bulge in the area where the Achilles tendon inserts behind the heel into the heel bone. This malady is called retrocalcaneal bursitis. One can see this from wearing shoes that rub this section or from running too much. This problem is usually resolved changing better shoes and limiting time of exercise.


Foot pain

Metatarsalagia


As a consequence of a fallen lateral plantar arch, the metatarsophalangeal areas or area of the joints between the bases of the toes 2-4 and the forefoot may take on too much weight and become painful as a result. This disease is called metatarsalgia.

Sharp pain or a feeling like walking with a pebble in the shoe feels in the sole just behind the first, second, third or fourth toes. It is usually worse when standing, walking or flexing the feet.

In this case, one can raise the painful area from the sole with a soft padding under the second and third metatarsal forefoot bones. It must not be placed directly under the painful area, but about a half an inch toward the heel, so that there will not be pressure on the painful area.

This condition is not serious and treatment with anti- inflammatory drugs, cold packs and rest can often take care of the symptoms. Good footwear, with additional shock-absorbing insoles or arch supports may also be useful.


Morton’s Neuralgia

The nerves between the bones of the metatarsal bones may get pinched between the second and third and third and fourth bones of the metatarsus in the forefoot. This condition is called Morton’s neuralgia, and it is common in middle-aged females.

A shooting pain to the affected toes is felt in this area immediately when standing up. Also numbness and sensation of tingling or pricking may be experienced.

In doctor´s examination there is pain when the bones are pressed together from the sides. Localized pain is also felt in the affected region between the metatarsus bones. X-ray, ultrasound or MRI may be used to exclude other conditions.

Treatment consists of the same type of foot support as in metatarsalgia. Good, wide enough shoes should be used. Cortisone injections may be used to get relief. If there is no improvement, surgery is a rarely used option.

Stress Fractures

Stress fractures are seen in the metatarsus bones. At least moderate intensity exertion usually precedes the problem. Examination shows tenderness in the area of the stress fracture. Changes will initially not show in x-rays, but are usually found in follow-up. Treatment consists of reducing stress on the foot.

Toe pain

Hallux Valgus


Hallux valgus is the most common problem of the frontal part of the feet. Its primary source appears to be congenital weakness, but wearing unsuitable shoes may worsen the condition. In this condition, the first metatarsal bone turns inward and the toe itself turns outward. Arthritis may develop in the joint at the base of the big toe or in the metatarsophalangeal joint and a nasty inflammation of the mucous bursa may appear on the outmost point. A bunion is an enlargement around this joint.

Main treatment consists of wearing well-fitting shoes and using an orthopedic splint. Surgery may be an option when the pain is severe.



Arthritis of the Toes

There are two types of arthritis. The most common is osteoarthritis, slowly progressive wear-and-tear arthritis or degenerative joint disease. With it the cartilage of the joint is wearing away with age. After this a bone exposes in the joint and it becomes painful and stiff.

The second type is inflammatory arthritis. It can be caused by rheumatoid arthritis or other systematic diseases. Problems of the toes are rarely the first and only symptom of the inflammatory disease.

In joints of the feet osteoarthritis most often affects the joint at the base of the big toe. In other toes it is met less frequently. In normal walking, the first toes turn upward at the end of each step. If there is arthritis in the base joint, it may cause pain and make walking extraordinarily difficult. Treatment consists of a support that will prevent the big toes form turning upwards. The best option is the so-called rolling shoe, where the sole of the shoe is rounded to help to walk.

Self-treatment includes temporary use of OTC anti-inflammatory drugs and gel application in the painful area. Cold compresses several times a day are usually effective. The toes or legs should not get cold if the circulation is poor. When pain is at its worst at the onset, the most valuable thing to do is to reduce the amount of exertion involving feet. Using a cane, not carrying anything, and losing excess weight help accomplish this goal.

Well-fitting shoes are of paramount importance in painful foot conditions. Running shoes have to be well padded. Running long distances on hard surfaces should be avoided, and increasing the length of runs should be made gradually. The more one exercises, the more one should stretch muscles afterwards.

Walking barefoot in the summer is a traditional strategy to strengthen the foot muscles. During winter, it is possible to exercise the feet by spreading the toes and learning to grasp objects with the toes. If running is too tough for the feet, another type of exercise should be considered. Swimming and biking are convenient ways to train and provide less stress on the feet.

Calluses and corns should be treated carefully and the skin kept from cracking. A foot file should be used and feet be greased regularly. Warm baths can be tried or devices that massage the feet gently. They may reduce the tension in the muscles of the feet.


Hammertoe and Mallet Toe

The most common problem caused by congenital structural weakness of the feet is the so-called hammertoe. It is a abnormality of the second, third or fourth toes. They bend at the middle joint, so that foot resembles a hammer. Mallet toe is similar, but the deformity is in the upper joint of the toe. The cause of both ailments is inappropriate shoes not fitting properly or a weakness of the structures of the feet. Different supports, toe exercises and surgery are used to treat these conditions.

Gout

One possible explanation for repeated attacks of acute inflammation of the metatarsophalangeal joint at the base of the big toe is gout. Gout is a metabolic illness, in which uric acid salts accumulate in the system. For some reason, the first place this illness manifests itself is in the joint of the big toe. The disease starts here in over half of the patients.

This inflammation is intensely painful and the joint may be clearly swollen and reddish. A synovial fluid analysis, laboratory tests, and x-rays or MRI confirm the diagnosis. Treatment consists of medication and diet. Without permanent changes in the diet, this illness has a remarkably high probability of recurrence.

The foods in the diet that are high in nucleic acid should be restricted. These include offal, roe, small fish, beans, etc. Some drugs, for instance diuretics, may increase the amount of uric acid salts. Traditional warnings include using only moderate amounts of cognac, port wine, and champagne.

Emergencies

Strong leg pain, paleness of the leg, and loss of pulse in it.
Leg pain and swelling.
Sprained ankle if you have problems moving.
Sharp pain in the region of the Achilles tendon after exercise and loss of range of motion in the foot.

See a Doctor

Foot pain that limits functioning.
Sprained ankle.
Swelling and pain in the big toe.
Foot pain strong enough to wake you up at night.
Prolonged pain that is not alleviated with self-treatment.
Unusual, painful positions of the big toe or other toes.
Burning pain in the sole of the foot.

Ankle and foot pain, more information:

webMD about broken foot.
Vascular.co.nz page about intermittent claudication.
Mayoclinic.com pages on restless legs.
Familydoctor.org pages on diabetic neuropathy.
Neuropathyinfeet.com pages about neuropathy.
Mayoclinic.com pages on shin splints.
MedlinePlus article about embolism.
National Heart, Lung, and Blood Institute about deep vein thrombosis.
Ezinearticles.com about blue toe syndrome.
RightHealth.com about sprained ankle.
Wikipedia on sprained ankle.
American Academy of Orthopedic Surgeons on arthritis of the foot and ankle.
Mayoclinic.com pages on achilles tendinitis.
webMD about ruptured tendons.
Emedicine article about tarsal tunnel syndrome.
American Academy of Orthopedic Surgeons on heel pain.
American Academy of Orthopedic Surgeons on plantar fasciitis.
Mdguidelines.com page about bone spur.
American Academy of Orthopedic Surgeons on flatfoot.
American Academy of Podiatric Sports Medicine page about Morton's neuroma.
Emedicine article about metatarsal stress fractures.
Wikipedia page on hallux valgus or bunion.
American Academy of Orthopedic Surgeons on rheumatoid arthritis of the foot and ankle.
American College of Rheumatology pages about gout.
HealthDesk.com about ingrown toenail.
webMD about athlete's foot.

Knee pain



Thepain.net UK Knee pain bookstore. Books about knee pain. Powered by amazon.co.uk. Thepain.net US Knee pain bookstore. Books about knee pain. Powered by amazon.com.
Being fit may help in pain conditions. Tv-gym.com.
Games can act as an active distraction and a method of pain relief. Abcdgame.com






Knee Pain

Well-functioning knees are vital to everyone because they carry a person’s weight while walking and running. They absorb the shock from jumping. Increased pressure is placed on the knees when kneeling, getting up from a sitting position, and walking up and down stairs. Severe knee problems may restrict a person’s life and functioning significantly.

There are two joints in the knee. One is between the femur or the thigh bone and the tibia or the shinbone, and one between the femur and the patella or the knee cap. The femur and tibia form a hinge joint protected in front by the kneecap. There are cushions in the form of cartilage that covers the surfaces of the bones in the joints. The lateral and medial menisci are C-shaped cartilage discs which act like shock absorbers in the knee.

Ligaments help to stabilize the knee. The median collateral ligament is on the inner side and the lateral on the outer side of the knee joint. They limit the movements sideways. The so called cruciate ligaments support the knee stable in forwards-backwards motion and rotation between the bones of the knee joint. There is the anterior cruciate ligament, or ACL and the posterior cruciate ligament, or PCL.

The quadriceps femoris is a large muscle group on the front of the thigh acting as powerful extensor of the knee joint. It is attached to patella which provides mechanical leverage to its function. There are also groups of muscles acting as knee flexors, adductors drawing the knee inward and abductors drawing the knee outward.

Those still growing may experience disorders of the growth plate as well as ossification disorders, which may cause pain during stronger exertion. X-rays or MRI will confirm the diagnosis. Treatment usually consists of reducing exertion levels. The symptoms typically disappear within a few years. With aging, problems of the knees are met more.


Overuse Pains

When stress on the legs is rapidly increased, it may cause temporary irritation in the muscles and joints. In the acute phase, cold compresses are useful. Prolonged pain may require the use of physical therapy, pain medication, and injections. Cortisone injections will usually work quickly when the structure that causes the problem is located.

Injuries

Knee problems in young people are often associated with sports where the knees are stressed and injury-prone. These include football, downhill skiing, soccer, and racquetball.

The kneecap may be dislocated when the leg gets twisted. In this case, there is sharp pain in the knee and the kneecap twists into an abnormal position. Often the kneecap returns in place by itself. Sometimes a doctor needs to set it.

A visit to a doctor’s office, however, is necessary in any case. Surgery may be an option for preventing future problems. If the kneecap gets dislocated several times, the situation needs to be looked at, and rehabilitation or surgery should be considered.

A fracture can break any bones around the knee in an accident with a blow, a fall or a sudden stumbling. Usually there is significant pain and the injured one is not able to bear weight on the knee. A suspicion of a fracture needs to be checked by a doctor.


Meniscus Tears

The meniscus may quite easily tear in connection with knee injuries. The medial meniscus is injured more often than the lateral one. The usual mechanism is a rotation of the load bearing knee. This may occur for example when squatting and twisting the knee at the same time. Tearing while extending and twisting does not happen so often. Direct trauma on the knee can be the cause of a meniscus tear.

There might be heard a sound when a meniscus tears. Often walking or playing is still possible. In some days, the symptoms may become clearer little by little. The typical symptoms are pain, a limited range of motion, stiffness and swelling.

Sometimes rest improves the situation fairly quickly, but there may be additional symptoms following, such as a feeling of the knee locking, rattling, swelling, and pain during exertion.

During examination, pain is found in the joint line and when twisting the knee into positions where the torn area is being pinched. Endoscopy and MRI are established methods of diagnosis. Also the contrast medium method is used for this purpose but not often. The advantage of endoscopy is that it allows for simultaneous treatment of most of the injuries.


Ligament Injuries

With similar forces also other ligaments of the knee may get injured with or without the menisci. This may occur for instance when extending a knee too far, landing on a flexed knee, stopping or shifting weight suddenly. Symptoms resemble those of meniscus injuries. Additionally instability of the knee joint may begin with a feeling of looseness in the joint.

When anterior or posterior cruciate ligaments tears, suffers the forwards-backwards and rotational stability between the bones of the knee joint. The cruciatum anterior ligament may get injured in connection with meniscus injuries. If this happens, especially during intense effort there may be rattling or a sense of unsteadiness.

With collateral ligament injuries there may be avulsion from the bony attachment of the ligament. If this is significant the knee may become unstable sideways and additional movement is noted. If not, there is only pain in the location of the injured ligament or its connection to the bone.

Treatment usually consists of the same kind of pain treatment as with the meniscus injuries and of improving muscle strength in the thighs and limiting the stress with the knee to the tolerance level. Surgery is used primarily with athletes.


Patellofemoral Pain Syndrome and Chondromalacia

Patellofemoral pain syndrome or pain from the contact of the back of the kneecap with the thigh bone is a familiar problem especially with sportsmen. The reason may be a partial dislocation or prolonged, repetitive strain of this joint. This can make the cartilages thin and soft and cause a condition called chondromalacia. Also fractures, functional disorders, arthritis of the bearing knee joint and tumors in the knee area may assist in developing this disorder.

Symptoms initially include pain when descending stairs or when bending down at the knees. Usually the knee starts aching when sitting still for longer periods of time when the knee cannot be straightened.

Examination shows tenderness and a cracking sound when pressing the kneecap down toward the knee joint and when moving it. Treatment includes strengthening of the muscles especially the quadriceps on the front of the thigh and anti-inflammatory drugs. Taping or bracing may be useful together with physiotherapy. Surgery may be considered in most difficult cases. Working in an appropriate occupation and job are essential as well as modifying hobbies and sports regime to the proper sorts and level.


Arthritis

The main source for knee problems in older people is arthritis. It usually is seen in middle-aged and older people. There are two types of arthritis of the knee. The most common is osteoarthritis, slowly progressive wear-and-tear arthritis or degenerative joint disease. With it, the cartilage of the joint is wearing away with age. After this, a bone exposes in the joint, and it becomes painful and stiff. Degenerative arthritis may develop after a fracture, ligament injury, or meniscus tears. It can take years after the injury to be born. Hereditary causes and overweight may also play a role in the formation.

The second type is inflammatory arthritis. It can be caused by rheumatoid arthritis or other systematic diseases and is usually found in both knees. In these cases, there is usually also pain in other joints and other symptoms as well. Usually inflammatory arthritis demands specific drug treatment depending on the disease causing it.

The first indication of arthritis is usually gradual development of pain connected to exertion like walking or climbing stairs or to staying in the same position for a long time. The symptoms may include stiffness, a cracking sound and mild swelling during the most difficult phases. Pain and swelling may be worse in the morning. Later there may be a feeling of locking and weakness. In severe cases, the knee may become overly mobile and incorrectly positioned.

X-rays or MRIs can confirm arthritis. However, even mild degenerative condition may cause symptoms; on the other hand, a joint that shows degeneration in the x-ray or MRI may produce few symptoms. The knee problems should not allow limit one's life unnecessarily. In most severe cases, it pays to have the problem checked thoroughly once. Different types of aid are available.

There is, unfortunately, no total cure for arthritis. Self-treatment includes OTC anti-inflammatory medicine in short courses as well as rubbing anti-pain ointments in the painful area. Cold compresses several times a day can be effective. Anti-inflammatory medicines ease the pain. Cold or heat treatment and electric therapy may also relieve the pain.

Glucosamine is a substance found in the cartilage, and it may reduce the arthritis pain in the early stages. Corticosteroids provide a strong anti-inflammatory effect. They may be used injected into the joint in moderate and severe pain.

Lifestyle should be optimized taking into an account the condition. Losing weight is beneficial for the joint and sometimes can reduce pain and make functioning significantly better. Vigorous stress on the knee should be avoided. Hobbies demanding running and jumping should be changed to less strenuous activities.

Using devices reducing burden on the knee can be useful. A cane, energy-absorbing shoes, or insoles may be used for this purpose. Braces also can be effective in decreasing pain and improving the ability to walk. Different knee supports are available. Soft supports are slightly warming and remind that one should be careful with the knee. Sturdier supports are available, but they need to reach over the knee into the thigh and toward the calf and should be tailor-made.

If no other treatments work, surgery may be an option. The results from artificial joint surgery are good. Rehabilitation of the knee after the operation is necessary.

Exercising the muscles around the degenerated knee is vital. Improving muscle strength is necessary and, despite the pain, the knees should be used in a moderate fashion. Exercises under the guidance of a physiotherapist or a personal trainer may be optimal for improving muscle strength. Massage may be helpful when the muscles around the knee are tender.

In the case of arthritis, it is indispensable to use all means to lower knee strain level during the worst pain episode. One can get higher chairs for the home, so it is easier to get up. It is possible even to raise the toilet seat higher. When ascending stairs, it is best to put the good leg forward and when descending, put the bad leg forward.

In case of knee problems, it is essential to strengthen the quadriceps. In the worst pain phase, it can be done contracting the quadriceps while holding the leg still and the knee straight. Contractions can initially last for 10 seconds and may be done as many times as wanted to per day.

From the beginning, one may lift the leg up while holding the knee quite straight while lying on your back. It can be tried with one set of lifting to see how many can be done, and then continue with daily sets of two thirds of the maximum number of lifts. If this seems to take too much time, one can add 2-4 lb. leg weights so that there is time for other things to do as well.

While lying down, legs can be lift up in different directions to exercise all the leg muscles. When lying on the side one can hold the leg straight and lift it up or lie on the stomach and lift the leg upwards. Leg weights may be used with these exercises also.

When the knee is better, one can consider adding knee-straightening exercises without extra weights at first, and then with weights. This will work if one holds the leg up under the thigh so that the foot does not touch the ground.

When this gets easier and does not make the knee hurt, one can continue to exercise the leg muscles at the gym to make them stronger than ever before. The condition of the thigh muscles is not as critical in someone who has no knee problems, but those who do have them should keep the leg muscles in an excellent shape.


Baker’s Cyst

Bulges consisting of a fluid-filled cyst that create a feeling of pressure or pain can often be found at the back of the knee after or without an injury. They are usually associated with the knee joint. If such a cyst bursts between the calf muscles, it may cause severe pain that is hard to distinguish from thrombosis.

The clinical picture gives a decent idea of the diagnosis and an ultrasound or MRI can be used to verify it. The bulge may be drained simultaneously, and a cortisone injection can be administered. If this does not solve the condition, surgery is an option. Possible ongoing causes such as meniscus injury should be ruled out, because they may prevent eliminating the problem.

Loose Fragments

There are some loose fragments in the knee that may cause pain and locking symptoms in the knee. If the lock releases, upon examination the knee may be almost asymptomatic. X-ray, MRI, or endoscopy may confirm the diagnosis. The loose particle can also be removed during the endoscopy.


Inflammation

Bacteria may cause a suppurating inflammation in the knee. This may occur due to a knee injury, a shot, or via blood circulation.

Symptoms are swelling in the knee, pain and burning. Examination shows swelling and possible redness of the knee. Laboratory tests show increased inflammation levels, and the synovial fluid is opaque and harbors bacteria.

Intravenous antibiotics may be necessary for treating this condition, and this is usually done in a hospital. The knee may need to be drained continuously and needs rest. Once the infection heals, knee exercises can be started.

Emergencies

Knee injury after which walking is extremely painful.
Dislocation of the knee.
Severe swelling in the knee accompanied with fever.
Knee remains in a locked position.

See a Doctor

Prolonged knee pain in children.
Knee injuries that generate more severe symptoms.
Knee pain accompanied by fever.
Repeated pain and swelling.
Repeated pain and locking of the knee.
Bothersome pain that is not alleviated with self-treatment.

Knee pain, more information:


American Academy of Orthopedic Surgeons on growth plate fractures.
RightHealth.com about knee overuse problems.
webMD about runners knee.
webMD about how to avoid damaging your knees.
American Academy of Orthopedic Surgeons on arthritis of the knee.
Familydoctor.org article about patellofemoral pain.
Ehealthmd.com page about softening of the kneecap cartilage.
Ehealthmd.com article about meniscal injuries.
Ehealthmd.com article about ligament injuries.
Mayoclinic.com pages on Baker's cyst.
American Academy of Orthopedic Surgeons on Osgood-Schlatter disease.
Intelihealth.com article about infectious arthritis.
Medicinenet.com pages about knee bursitis.
Emedicine article about knee dislocation.
webMD about knee dislocation.
Mdguidelines.com article about loose bodies.
HealthDesk.com about knee arthroscopy.
Wikipedia page on knee arthroscopy.
About.com on knee replacement surgery.
Ezinearticles.com about knee pain exercises for women.