It is a condition in which part of the cartilage and bone below separates from the articular surface and may even be inseparable. It usually occurs in the hips and knees. followed by ankles and elbows It is found in young people (ages 10 to 20) and middle-aged (ages 30 to 60) and occurs more in men than women. Osteochondritis dyscicans can occur intermittently and may not require treatment just by observation. Early diagnosis and treatment are essential for the best chance of recovery and return to normal activities, including sports.