Brief psychological screening for trapeziectomy: Identifying patients at high risk of a poor functional outcome.

Introduction: This study investigates if the psychological subscale from the STarT Back Screening Tool (STarT Psych-sub) identifies patients at high risk of a poor functional outcome after a trapeziectomy based on modifiable psychological factors.

Methods: A total of 83 patients completed the STarT Psych-sub, QuickDASH (Quick Disabilities of the Arm, Shoulder and Hand), Patient Evaluation Measure (PEM) and a numeric pain rating scale (NPRS) before trapeziectomy. QuickDASH, PEM and NPRS were completed at 6 weeks, 16 weeks and 1 year after the trapeziectomy.

Results: The STarT Psych-sub stratified 24 patients (29%) as 'high-risk' and 59 (71%) as 'not high-risk' of a poor outcome. The 'high-risk' group reported worse function and pain (QuickDASH = 72.7, PEM = 81.1, NPRS = 8.3) at baseline than the 'not high-risk' group (QuickDASH = 56.1, PEM = 66.4, NPRS = 7.2). This difference remained constant at all time points after the trapeziectomy with 1-year scores on the QuickDASH = 39.6; PEM = 47.1 and NPRS = 3.7 for the 'high-risk' group and QuickDASH = 24.3; PEM = 33.3 and NPRS = 1.9 for the 'not high-risk' group.

Conclusions: Brief psychological screening shows that patients with psychological risk factors experience improved pain and function outcomes following trapeziectomy, however their outcomes are significantly worse than patients who do not have psychological risk factors.