What is intersection syndrome?

Tendonitis : This is a form of tendinitis of the wrist. It can cause sqeeking of the wrist. This is usually treated effectively with an injection of cortisone.

Intersection sd: Intersection syndrome is a painful condition that affects the thumb side of the forearm when inflammation occurs at the intersection of the muscle bellies that move the thumb and wrist. The mechanism of injury is usually repetitive resisted extension.