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Revision of the Failed Thumb Carpometacarpal Arthroplasty
Loukia K Papatheodorou1, Jonathan D Winston1, Deidre L Bielicka1
1Department of Orthopaedic Surgery, Orthopaedic Specialists-UPMC, the University of Pittsburgh, Pittsburgh, PA.
Purpose:
To evaluate the outcome of revision surgery for failed thumb carpometacarpal (CMC) arthroplasty.
Methods:
We retrospectively analyzed 32 patients with failed thumb CMC arthroplasty. The primary reason for revision was pain caused by metacarpal subsidence. Revision surgery included soft tissue interposition and distraction pinning to address the metacarpal subsidence. Additional ligament reconstruction was performed in patients with thumb instability. Eight patients required additional metacarpophalangeal joint fusion for concomitant joint hyperextension. Eleven required additional partial excision of the trapezoid for concomitant scaphotrapezoidal joint arthritis. All patients were evaluated clinically and radiographically.
Results:
Mean follow-up was 57 months (range, 24-121 months). Pain levels evaluated by visual analog scale were significantly reduced in all patients after revision surgery. Mean grip strength and key pinch strength significantly increased. Twenty-seven patients achieved good functional results; those for 5 patients were fair.
Conclusions:
This study showed that revision surgery with distraction pinning and soft tissue interposition with or without ligament reconstruction was an effective treatment for failed CMC arthroplasty of the thumb.
Type Of Study/Level Of Evidence:
Therapeutic IV.
