Extensor Digitorum Communis (EDC) Anchor and Interposition Arthroplasty for the Metacarpo-Phalangeal Joint (MCPJ).

Replacing a destroyed MCPJ has always been a challenge. Few operations have resulted in consistent satisfactory results. Also, anchoring a subluxed EDC tendon from the metacarpal head has produced numerous corrective procedures, again indicating the difficulty to keep the extensor tendon aligned.