Bursitis In The Foot And Ankle

Overview

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.

Causes

The retrocalcaneal bursa can become inflamed as the result of another condition, such as damage to the Achilles tendon, osteoarthritis, rheumatoid arthritis, gout, and pseudogout. In these instances, the treatment for bursitis must accompany treatment for the underlying condition. Septic retrocalcaneal bursitis, which is caused by an infection, is uncommon. Infection can reach the bursa through a cut, puncture, a blister, or even an insect bite. It is possible to have septic bursitis without an obvious opening. In these cases the superficial wound may have healed quickly, but still allowed bacteria into the bursa.

Symptoms

Where the tendon joins the calcaneal bone, friction can cause the spaces between the tendon, bone and skin to swell and inflame with bursitis. This constitutes a calcaneal bursa. Apart from swelling over the back of the heel, you?ll feel acute tenderness and pain when you move it or even apply light pressure. Your swollen heel may look more red than the other one, and the swelling is often so hard it can feel like bone, partly because it sometimes is, as a bony overgrowth can occur in chronic cases.

Diagnosis

Diagnosis of heel bursitis can be made by your health practitioner and is based on the following. Assessing the location of the pain by palpating the back of the heel. Assessment of any inflammation at the back of the heel. Assessment of biomechanics and foot function. Ultrasound or MRI can reveal inflammation of the retro calcaneal bursa.

Non Surgical Treatment

Relieving the symptoms of bursitis initially focuses on taking the pressure off the bursa. This can be done with proper cushioning, inserts, or footwear but may require surgery if it is a bone formation problem (i.e. Huglund's Deformity). If your bursitis is caused by an infection (septic bursitis), the doctor will probably drain the bursa sac with a needle and prescribe antibiotics to treat the infection.

Surgical Treatment

Surgery is rarely done strictly for treatment of a bursitis. If any underlying cause is the reason, this may be addressed surgically. During surgery for other conditions, a bursa may be seen and removed surgically.

Prevention

After taking a history and performing a physical examination, your physician may order x-rays to rule out other disorders. Your doctor may administer injections of corticosteroids and a local anesthetic to reduce swelling and ease pain. Also, to reduce swelling, your physician may draw excess fluid from the bursa with a syringe and then tightly wrap and compress the joint with an elastic bandage. In severe, persistent cases surgery to remove the bursa may be necessary. For infectious bursitis, antibiotics will be prescribed.

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