Bilateral Giant Cell Tumour of the Achilles Tendon Sheath: A Rare Case Managed with Peroneus Brevis Tendon Transfer

A 34-year-old male presented to the outpatient department with bilateral posterior ankle swelling. X-ray imaging showed no bony involvement, but histopathology was suggestive of bilateral giant cell tumor of the Achilles tendon. Both lesions were excised with meticulous dissection and transfer of peroneus brevis tendon. Postoperative recovery was uneventful, with favorable short-term functional outcome.

This rare case of bilateral giant cell tumor of the Achilles tendon highlights the importance of early recognition and careful planning of reconstructive approaches to ensure optimal outcomes while minimizing functional deficits.