Post-operative Results of the Trapezometacarpal (TMC) Prosthesis for Advanced Pre-operative Deformities

Comparative Study of the Results of Trapeziometacarpal Prostheses According to the Preoperative Deformation

Trapezometacarpal protheses are implanted for patients with trapezometacarpal arthritis. Having a pre-operative thumb adduction angle of less than 25 degrees with hyperextension, meaning a " Z-deformity " are somehow a reason to go for another surgical treatment: trapezectomy with ligament reconstruction. This study will aim at analyzing the results of another surgical treatment which is the trapezometacarpal arthroplasty in this type of deformities.

Inclusion criteria:

• Patient with TMC joint arthritis
• Patient with adduction <25 degrees
• Patients with Z deformity
• Patient operated for TMC joint arthroplasty

Exclusion criteria:

- TMC arthroplasty implanted for fractures