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Posterior Achilles Tendon Bursitis

By

Kendrick Alan Whitney

, DPM, Temple University School of Podiatric Medicine

Last full review/revision Dec 2019| Content last modified Dec 2019
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Posterior Achilles tendon bursitis is inflammation of a bursa that forms in response to shoe pressure and is located at the top edge of the posterior shoe counter between the skin and Achilles tendon. Diagnosis is clinical. Treatment is footwear modification.

Posterior Achilles tendon bursitis occurs mainly in young women. Wearing high-heeled shoes is a risk factor. Another risk factor is a bony prominence (Haglund deformity) on the calcaneus. This deformity predisposes to bursa formation if repeatedly irritated by the shoe counter.

Symptoms and Signs

Symptoms and signs of posterior Achilles tendon bursitis develop at the top edge of the posterior shoe counter. Early symptoms may be limited to redness, pain, and warmth. Later, superficial skin erosion may occur. After months or longer, a fluctuant, tender, cystic nodule 1- to 3-cm in diameter develops. It is red or skin-colored. In chronic cases, the bursa becomes fibrotic and calcified.

Diagnosis

  • Symptoms and a small, tender, and skin-colored or red nodule

The presence of the small, tender, and skin-colored or red nodule in a patient with compatible symptoms is diagnostic. Rarely, an Achilles tendon xanthoma develops at the top edge of the posterior shoe counter but tends to be pink and asymptomatic. Achilles tendon enthesopathy causes pain mainly at the tendon’s insertion but may also cause pain at the top edge of the posterior shoe counter. Enthesopathy is differentiated by the absence of a soft-tissue lesion.

Treatment

  • Modification of footwear

Properly fitting shoes with low heels are essential. A foam rubber or felt heel pad may be needed to lift the heel high enough so that the bursa does not contact the shoe counter. Protective gel wraps, padding around the bursa, or the wearing of a backless shoe until inflammation subsides is indicated. Foot orthotics may enhance rear foot stability and help reduce irritating motion on the posterior calcaneus while walking.

Warm or cool compresses, nonsteroidal anti-inflammatory drugs (NSAIDs), and intrabursal injection of a local anesthetic/corticosteroid solution offer temporary relief; the Achilles tendon itself must not be injected. Surgical removal of a portion of the underlying bone may rarely be necessary to reduce soft-tissue impingement.

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