Background: Trapeziometacarpal (TMC) arthritis is an expected part of ageing to which most patients adapt well. Patients who do not adapt to TMC arthritis may be offered operative treatment. The factors associated with reoperation after TMC arthroplasty are incompletely understood. The purpose of this study was to determine the rate of, the underlying reasons for, and the factors associated with unplanned reoperation after TMC arthroplasty. Methods: In this retrospective study, we included all adult patients who had TMC arthroplasty for TMC arthritis at 1 of 3 large urban area hospitals between January 2000 and December 2009. Variables were inserted into a multivariable Cox proportional hazards model to determine factors associated with unplanned reoperation, and the Kaplan-Meier curve was used to estimate and describe the probability of unplanned reoperation over time. Results: Among 458 TMC arthroplasties, 19 (4%) had an unplanned reoperation; 16 of 19 (84%) for persistent pain and two-thirds within the first year. The multivariate Cox regression analysis showed that unplanned reoperation was independently associated with younger age, surgeon inexperience, and index procedure type. Conclusions: Surgeons should be aware as well as patients should be informed that as many as 4% are offered or request a second surgery, usually for persistent pain and often within the 1-year window when additional improvement is anticipated.
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