trapeziectomy

Nalebuff Classification

Type I - Boutonniere 

- commonest

- MP flexion /  IP hyperextension

- usually EPB rupture with EPL subluxation

Type II

- Boutonniere & Swan Neck

- doesn't exist according to Nalebuff

Definition

Degenerative arthritis at trapeziometacarpal joint (CMC)

- trapezoid - metacarpal

Epidemiology

Commonest hand joint involved in OA 

Most common in older women