Intratendinous Ganglion in the Extensor Digitorum Communis of the Hand: A Case Report

Ganglions are most common benign lesion of the hand and wrist. Although they usually arise from tendon sheaths, those originating within a tendon substance itself are rare. The etiology, pathogenesis and treatment of the intratendonous ganglion are not completely understood. We report a case of an intratendinous ganglion that developed in the extensor digitorum communis tendon of the hand and caused the extension limitation of the wrist. Treatments consisted of the intratendinous ganglion excision and meticulous tendon repair followed by tenosynovectomy.