Maïa® trapeziometacarpal joint arthroplasty: Survival and clinical outcomes at 5 years' follow-up

Abstract

We sought to report the clinical and radiological outcomes and the survival of Maïa^® trapeziometacarpal joint arthroplasty retrospectively at a mean 5 years' follow-up. We evaluated the implant survival and the clinical outcomes of 93 patients (113 prostheses). Patients were examined during a consultation and their mobility, key pinch strength and satisfaction were recorded. Patients also completed a QuickDASH evaluation. The 5-year survival rate was 92.2%. The mean QuickDASH Score was 26.7. The complication rate was 31% and the revision rate was 12.4%. The most common complication was dislocation and the most frequent cause of surgical revision was periprosthetic ossification. We identified two cases of aseptic loosening. This study shows the Maïa^® prosthesis provides satisfactory medium-term results and has an excellent 5-year survival. However, the high complication and revision rates are still a major concern.

Keywords: Arthroplastie trapézo-métacarpienne; Arthrose basale du pouce; Basal thumb arthritis; Maïa(®) prosthesis; Prothèse Maïa(®); Rhizarthrose; Trapeziometacarpal arthroplasty; Trapeziometacarpal osteoarthritis.