Some health conditions, diseases, and injuries can have long-lasting effects on your bones and joints. One example of this is boutonniere deformity, when the middle joint in your finger bends inward ...

A boutonniere deformity is a condition that affects the joints in one of your fingers. It causes the middle joint of your finger to bend in, and the outermost joint to bend out. It’s also called a ...

Boutonniere deformity causes the middle joint in a finger or thumb to bend inward and the end joint to bend outward. It is possible to correct this using a splint, but sometimes, other treatments are ...