Thumb Carpometacarpal Arthroplasty with Ligament Reconstruction and Interposition Costochondral Arthroplasty

摘要

Thumb arthritis at the carpometacarpal (CMC) joint is one of the most common sites of arthritis, especially in women. Thumb arthroplasty is an effective method of relieving pain and improving function. Materials and Methods Qualitative and quantitative outcomes were assessed clinically and radiographically in 58 patients (66 thumbs) with thumb basal joint arthritis limited to the trapeziometacarpal joint, treated with hemiresection arthroplasty of the trapezium, flexor carpi radialis (FCR) ligament reconstruction, and allograft costochondral interposition graft. Description of Technique The thumb CMC joint arthroplasty is performed using an FCR tendon for ligament reconstruction combined with removal of the distal half of the trapezium, which is replaced with a life preserver-shaped spacer that is carved out of allograft cartilage.