Stiffness (osteochondritis)

This condition occurs most often in younger males, especially after an injury to a joint.

It’s a condition in which a fragment of cartilage, along with a thin layer of the bone, comes loose from the end of a bone – usually the knee, though it can occur in other joints, too. The fracture may heal by itself, but a surgical procedure may be needed if the loose fragment gets caught between the moving parts of the joint.