Bursitis Of The Foot Physiology

Overview
Heel bursitis is specifically the inflammation of the retrocalcaneal bursa, located at the back of the heel, under the Achilles tendon. There are a handful of factors that put you at risk for developing heel bursitis. Long distance runners are prone to heel bursitis, due to repeated stress and pounding upon the heel joint. Engaging in activities such as running, bicycling, walking, jumping, and stair climbing for extended periods of time can overwork the heel joints and start to irritate the bursae. Suddenly changing to a high-intensity workout regime puts a lot of stress on the heel, making it vulnerable to injury. Hard blows/bumps to the heel can immediately damage the bursae, leading to swelling and inflammation. Training at high intensities without stretching and warming up can also contribute to the development of heel bursitis. Even improper footwear can be a big factor. Some other conditions can put you at risk as well, such as: tarsal tunnel syndrome, rheumatoid arthritis, plantar fasciitis, muscle weakness, joint stiffness, and heel spurs. It is very important to get a professional diagnosis if you are having heel pain because heel bursitis is often confused for Achilles tendonitis, and the proper treatments are very different. The pain could also be plantar fasciitis or general heel pain syndrome.

Causes
The causes and risk factors of retrocalcaneal bursitis are listed below. Identifying the underlying reason the bursa is inflamed will help set a course for treatment. Repetitive use of the ankle. Retrocalcaneal bursitis is often caused by frequent "mini-traumas." These mini-traumas are often due to excessive walking, jumping, or running. Running uphill, which causes the foot to flex considerably, can be especially irritating to the retrocalcaneal bursae. People who suddenly intensify their exercise programs without adequate stretching and muscle conditioning may get retrocalcaneal bursitis. In general, it is often associated with over use of the Achilles attachment, the area where the Achilles tendon fibers attach to the heel.

Symptoms
Common signs and symptoms associated with infracalcaneal bursitis include redness under the heel. Pain and swelling under the heel. Pain or ache in the middle part of the underside of the heel. Heel pain or discomfort that increases with prolonged weight-bearing activities.

Diagnosis
When a patient has pain in a joint, a careful physical examination is needed to determine what type of movement is affected and if there is any swelling present. Bursitis will not show up on x-rays, although sometimes there are also calcium deposits in the joint that can be seen. Inserting a thin needle into the affected bursa and removing (aspirating) some of the synovial fluid for examination can confirm the diagnosis. In most cases, the fluid will not be clear. It can be tested for the presence of microorganisms, which would indicate an infection, and crystals, which could indicate gout. In instances where the diagnosis is difficult, a local anesthetic (a drug that numbs the area) is injected into the painful spot. If the discomfort stops temporarily, then bursitis is probably the correct diagnosis.

Non Surgical Treatment
Many cases of retrocalcaneal and retroachilles bursitis can be treated effectively at home. One of the most important factors is eliminating shoe gear that presses against the back of the heel. Comfortable, supportive footwear and frequently resting the foot will minimize friction at the heel and give the inflammation a chance to subside. These steps, along with other methods to alleviate swelling, such as non-steroidal anti-inflammatory drugs (NSAIDs, e.g., ibuprofen), icing the heel, and elevating the foot, are usually successful in treating retrocalcaneal bursitis.

Surgical Treatment
Surgery to remove the damaged bursa may be performed in extreme cases. If the bursitis is caused by an infection, then additional treatment is needed. Septic bursitis is caused by the presence of a pus-forming organism, usually staphylococcus aureus. This is confirmed by examining a sample of the fluid in the bursa and requires treatment with antibiotics taken by mouth, injected into a muscle or into a vein (intravenously). The bursa will also need to be drained by needle two or three times over the first week of treatment. When a patient has such a serious infection, there may be underlying causes. There could be undiscovered diabetes, or an inefficient immune system caused by human immunodeficiency virus infection (HIV).