Bursitis is the inflammation of the small fluid-filled pads, or bursae, that act as cushions among your bones and the tendons and muscles near your joints. Bursitis occurs when the bursa become inflamed, and often occurs in joints that perform frequent and repetitive motion. The foot only contains one naturally occurring bursal sac between the Achilles tendon and the heel bone, which protects the Achilles from the pressure against the heel bone during ambulation. However, shoes may put pressure on this bursa. The bursa might also incur trauma from walking on hard ground. And, though they are not naturally occurring, bursa sacs can also form, and become inflamed, in other parts of the foot, including the bottom of the heel, and the metatarsal plate, the outside of the foot below the fifth toe, and so on.
Pain at the posterior heel or ankle is most commonly caused by pathology at either the posterior calcaneus (at the calcaneal insertion site of the Achilles tendon) or at its associated bursae. Two bursae are located just superior to the insertion of the Achilles (calcaneal) tendon. Anterior or deep to the tendon is the retrocalcaneal (subtendinous) bursa, which is located between the Achilles tendon and the calcaneus. Posterior or superficial to the Achilles tendon is the subcutaneous calcaneal bursa, also called the Achilles bursa. This bursa is located between the skin and posterior aspect of the distal Achilles tendon. Inflammation of either or both of these bursa can cause pain at the posterior heel and ankle region.
Pain or tenderness at the back of the heel around the Achilles region. Increased pain during activities with strong, repetitive calf contractions, walking (uphill), stair climbing, running, jumping. Pain may be worse with rest after activity (that night or the next morning) or at the beginning of the excercise. Pain when wearing shoes and the heel is getting rubbed. Bump forming on the back of the heel. Limping. Stiffness. Decreased range of motion. Redness and warmth (if the bursa gets infected).
A thorough subjective and objective examination from a physiotherapist may be all that is necessary to diagnose a retrocalcaneal bursitis. Diagnosis may be confirmed with an ultrasound investigation, MRI or CT scan.
Non Surgical Treatment
The initial course of treatment for this problem, after the usual ice and ibuprofen/aspirin routine or course, is to change footwear, especially if the onset of the problem was coincidental with a new pair of shoes. If this fails, a small heel lift (no more than ??) in both shoes may provide enough biomechanical adjustment to relieve the stress and/or friction over the area. If there is still no improvement, complete rest from running is probably advised, along with a professional consultation.
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.