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Revision of thumb trapeziometacarpal arthroplasty
William P Cooney1, Timothy P Leddy, Dirk R Larson
1Department of Orthopedic Surgery, Division of Hand Surgery, Mayo Clinic, Rochester, MN 55905, USA. cooney.william@mayo.edu
Purpose:
To determine the incidence of revision surgery after thumb trapeziometacarpal joint arthroplasty and to present the expected results of future surgical treatment.
Methods:
We reviewed the patient database at our medical center and found 654 procedures performed between 1988 and 2000 for the treatment of thumb basal joint arthritis. From the database we found that revision arthroplasties were performed on 15 patients with 17 arthroplasties in the treatment of mechanical pain related to instability or bone impingement. Referred patients with primary surgery performed elsewhere and patients with neurogenic pain were reviewed but not included as a primary focus of this study. The revision surgical procedures included soft-tissue interposition alone or soft-tissue interposition with ligament reconstruction for mechanical symptoms and neurolysis of peripheral nerves for associated neurogenic pain. The assessment included preoperative and postoperative patient chart review, measurement of pinch and grip strengths, radiographic assessment, and patient contact to provide complete medical information including any further medical or surgical treatment.
Results:
Based on a grading system previously used to evaluate thumb revision surgery, objective good (or satisfactory) results were found in 13 of 17 revision procedures. The method of soft-tissue revision (resection with soft-tissue interposition or resection with ligament reconstruction) did not influence the outcome of good versus fair or poor results. Persistent failures (2 fair, 2 poor) resulted from both soft-tissue interposition alone and revision with ligament support arthroplasties. Revision arthroplasty with soft-tissue procedures for mechanical pain provided predictably good results unless a nerve injury occurred at the time of the revision surgery.
Conclusions:
Failure of primary thumb trapeziometacarpal arthroplasty can be salvaged by a second surgery with ligament reconstruction procedures combined with soft-tissue interposition and provides satisfactory patient outcomes in more than 75% of cases studied.
Type Of Study/Level Of Evidence:
Therapeutic, Level IV.
