M93: Other osteochondropathies

M93.2: Osteochondritis dissecans

Osteochondritis dissecans is a joint condition that occurs when a small segment of bone begins to separate from its surrounding region due to a lack of blood. The bone and cartilage affected can stay in place, a condition sometimes referred to as stable osteochondritis dissecans, or can detach and float within the joint space causing pain and joint instability. Typically it affects knees, elbows and ankles. While it can affect people of all ages, it's more common in children and adolescents who actively engage in sports that involve high-impact contact and put stress on the joint, like jogging and jumping. The condition may present subtly with minor pain or swelling, however with progression, may cause inability to straighten the joint or joint locking. The progression and severity vary significantly and help in diagnosis and treatment decisions.