Long-term outcome of Camitz opponensplasty for severe carpal tunnel syndrome

Abstract

Introduction: Camitz opponensplasty has been described as a useful adjunct to carpal tunnel release for patients with severe carpal tunnel syndrome to improve thumb opposition, with good short-term results demonstrated in the literature. There are however few reports of long-term functional outcome assessment. Our study aimed at assessing the long-term outcome of Camitz opponensplasty in a single centre of teaching hospital. Methods: Retrospective review of patients who received Camitz opponensplasty for severe carpal tunnel syndrome from 2007 to 2019 was performed. 28 patients were included into the study for telephone follow-up and 16 patients agreed for further objective assessment. Subjective outcome was measured with QuickDASH score. Objective assessment included Kapandji score, power grip, tripod and pinch grip strength, sensory modality assessment with monofilament and two- point discrimination test. Results: Mean follow-up duration was 8.9 years. No major complications were found. Majority of patients reported subjective improvement after Camitz opponensplasty with low QuickDASH score at time of assessment. A high mean Kapandji score was achieved in most patients with significant overall improvement in grip strength and sensory assessment. Conclusion: Camitz opponensplasty improves hand function and provides good long-term clinical outcome in patients with severe carpal tunnel syndrome.