Rheumatoid thumb

Rheumatoid Thumb

Nalebuff Classification

 

Type I - Boutonniere 

- commonest

- MP flexion /  IP hyperextension

- usually EPB rupture with EPL subluxation

 

Rheumatoid Boutonniere Thumb

 

Type II

- Boutonniere & Swan Neck

- doesn't exist according to Nalebuff