An osteochondral defect is a rare condition of osteonecrosis of the subchondral bone, characterized by a loose bone fragment and articular cartridge which is partially or completely detached from underlying bone. Joints most commonly affected are knee, elbow, and ankle. Symptoms include localized pain following athletic injury or overuse, more often in boys than girls. If the fragment becomes lodged in the joint, the patient may experience increased pain, tenderness, locking, or crepitus of the joint. Treatment depends on growth stage of affected patient. Juveniles with open growth plates may be treated conservatively and nonsurgically. Adults who are skeletally mature may undergo arthroscopic repair.
Related topic: osteochondral defect of talus
, osteochondritis dissecans of knee
M93.20 – Osteochondritis dissecans of unspecified site
82562007 – Osteochondritis dissecans