Thuysbaert G, Goorens CK, Vanmierlo B, et al. - The present study was performed to evaluate addition–subtraction osteotomy with ligamentoplasty for symptomatic trapezial dysplasia with metacarpal instability. Researchers conducted a single-center, retrospective cohort study including patients treated surgically for primary instability of the trapeziometacarpal (TMC) joint with trapezial dysplasia between 2003 and 2007. They assessed pain (visual analog scale), mobility (opposition and retropulsion), patient-reported disability ( Quick–Disabilities of the Arm, Shoulder, and Hand), and radiographic evaluation (Devers’ angle) 10 years after surgery. They retrospectively examined 17 thumbs (mean follow-up, 12 years). The results of this study exhibited that addition–subtraction osteotomy with ligamentoplasty has a positive long-term effect on symptomatic trapezial dysplasia with TMC joint instability. As per the findings, although this operation did not protect the TMC joint from further wear, the pain was acceptable for most patients.