Who does boutonnière deformity affect?

Who does boutonnière deformity affect?

Boutonnière deformity can happen to anyone. You can even be born with it. However, it’s more likely to happen if you play sports where you can jam your finger or if you have arthritis. It also can be caused by a cut to the top of the second knuckle of your finger from the tip, the proximal interphalangeal (PIP) joint. If your tendon is severed from your bone, you won’t be able to straighten your PIP joint.