Treatment of Peritrapezial Osteoarthritis With Isolated Trapeziometacarpal Arthroplasty in 300 Patients

Inclusion Criteria:- Patients over 18 years of age who are members or beneficiaries of french social security * Patient requiring surgical management * Clinical and radiographic diagnosis of peri-trapezial osteoarthritis in the 1 or 2 joints: TM osteoarthritis: glickel sign + grinding test STT osteoarthritis: pain on wrist mobilization in flexion-extension and prono-supination * TM (Eaton-Littler stages II to III) and STT (Crosby stages II and III) radiographic osteoarthritis * Persistent pain and functional limitations despite conservative treatment for at least 6 months (combining intermittent immobilization of wrist and thumb + joint infiltration of the 2 joints) * Ability to understand and sign the informed consent form. Exclusion Criteria: * History of surgery on the affected thumb. * Systemic inflammatory diseases (e.g. rheumatoid arthritis). * Active infection or history of joint infection of the upper limb. * Inability to participate in post-operative follow-up.