Osteochondritis dissecans (OCD) is separation of immature articular cartilage from underlying bone. It is most commonly seen in the stifle, elbow, shoulder, and hock.

• 骨软骨炎指未成熟关节软骨与骨骼分离。该疾病由骨软骨病引起。最常见于膝关节，肘，肩，踝关节。