Proximal row carpectomy (PRC) and 4-corner arthrodesis (FCA) are common salvage procedures for the treatment of scapholunate advanced collapse and scaphoid nonunion advanced collapse. This study aimed to assess rates of reoperation and conversion to wrist fusion and to assess the factors associated with reoperation and conversion to wrist fusion for patients treated with PRC and FCA.
A retrospective chart review was performed evaluating 266 adult patients undergoing PRC or FCA at a single institutional system from 2002 to 2016. Demographic data, patient- and injury-specific data, reoperation and conversion rates, and complications were collected. Potential factors associated with reoperation or wrist fusion were evaluated using a bivariate, followed by a multivariable, analysis.
Reoperation was more commonly performed in FCA (34%) than in PRC (11%) (odds ratio [OR], 3.4; 95% confidence interval [95% CI], 1.7–6.8) and occurred at a shorter postoperative interval. In a multivariable analysis for reoperation, manual labor was associated with reoperation in patients undergoing FCA (OR, 5.4; 95% CI, 1.5–19.1). In those undergoing PRC, anterior interosseous nerve (AIN) and/or posterior interosseous nerve (PIN) neurectomy was associated with a lower rate of reoperation (OR, 0.18; 95% CI, 0.06–0.57). In a multivariable analysis for conversion to wrist arthrodesis, intraoperative AIN and/or PIN neurectomy (OR, 0.18; 95% CI, 0.06–0.57) was associated with a lower rate of conversion to wrist fusion, and smoking (OR, 4.9; 95% CI, 1.8–13.5) was associated with a higher rate of conversion to wrist fusion. In the subanalysis of patients who underwent PRC, only AIN and/or PIN neurectomy was associated with lower rates of conversion to wrist arthrodesis (OR, 0.15; 95% CI, 0.04–0.56).
In our cohort, we observed that AIN and/or PIN neurectomy reduced the risk of reoperation and conversion to wrist arthrodesis after PRC. Smoking increased the odds of conversion to wrist arthrodesis in the combined PRC/FCA cohort; however, it is unclear whether this was due to smoking itself or whether the indications for PRC or FCA were affected, leading to this result.
Type of study/level of evidence
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Published online: December 13, 2019
Accepted: October 15, 2019
Received: October 1, 2018
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