Swelling and inflammation near a joint may be a sign of bursitis, a condition that involves buildup of liquid and inflammation in a bursa sac that cushions a joint. This condition has earned some interesting names over the years: housemaid?s knee, student?s elbow, and tailor?s bottom, to name a few. Simply put, bursitis is the inflammation of a bursa and buildup of fluid in the bursa sac. A bursa is a thin, slippery sac found around a joint that serves to reduce friction between bone and surrounding soft tissue, such as skin, muscles, ligaments and tendons. A bursa sac is made up of a synovial membrane, or synovium, that produces and contains synovial fluid. Excessive friction, a trauma, or other condition can irritate the synovium and cause it to become inflamed. The inflamed synovium will thicken and produce excess synovial fluid, and can cause symptoms such as localized swelling, skin redness and warmth, tenderness and pain. Of the approximately 160 bursae in the body, only a handful of them usually cause bursitis. These usual suspects are found in the knee, shoulder, elbow, and hip. Less frequently, bursitis may also occur in the heel, wrist, buttocks and big toe.
Feet are extremely resilient and are designed to stand up to the pressures of day-to-day living. In some cases, though, foot structures may break down when subjected to chronic stress associated with long periods of weight-bearing activity on concrete, asphalt, or other hard surfaces (especially when footwear does not allow for proper weight distribution). Foot problems, including infracalcaneal bursitis, are often made worse by poorly designed footwear, and pressure, impact, and shear forces can damage the feet over time. Bursal sacs are intended to minimize this damage, but sometimes the bursa itself becomes inflamed. A rapid increase in physical activity levels or thinning of the heel?s protective fat pad are factors that may contribute to infracalcaneal bursitis. Other possible causes of infracalcaneal bursitis include blunt force trauma. Arthritic conditions. Acute or chronic infection. The following factors may increase a person?s risk of bursitis, including infracalcaneal bursitis. Poor conditioning. Exposure to cold weather. Participating in contact sports. Having a previous history of bursitis in any joint. Heel striking when running, especially in conventional running shoes with heel elevation.
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.
Plain radiographs of the calcaneus may reveal a Haglund deformity (increased prominence of the posterosuperior aspect of the calcaneus). However, on weight-bearing lateral radiographs, the retrocalcaneal recess often appears normal even in patients with retrocalcaneal bursitis, limiting its usefulness in making this diagnosis.Radiographs may be used as a diagnostic measure to support a clinician?s diagnosis of retrocalcaneal bursitis. Individuals with retrocalcaneal bursitis may have an absence of the normal radiolucency (ie, blunting) that is seen in the posteroinferior corner of the Kager fat pad, known as the retrocalcaneal recess or bursal wedge. This may occur with or without an associated erosion of the calcaneus.
Non Surgical Treatment
Treatment is primarily comprised of relief from the painful activity (running). It is important that shoes do not pinch the heel. If satisfactory progress is not made during the rehabilitation, medical treatment can be considered in the form of rheumatic medicine (NSAID) or injection of corticosteroid in the bursa. Injections should be performed under ultrasound guidance to ensure optimal effect and reduce the risk of injecting into the Achilles itself. If progress is not made neither through rehabilitation nor medicinal treatment, surgical treatment can be attempted.
Bursectomy is a surgical procedure used to remove an inflamed or infected bursa, which is a fluid-filled sac that reduces friction between tissues of the body. Because retrocalcaneal bursitis can cause chronic inflammation, pain and discomfort, bursectomy may be used as a treatment for the condition when it is persistent and cannot be relived with other treatments. During this procedure, a surgeon makes small incisions so that a camera may be inserted into the joint. This camera is called an arthroscope. Another small incision is made so that surgical instruments can be inserted to remove the inflamed bursa.