a disease characterized by abnormal differentiation of growth cartilage. Called also dyschondroplasia. It is a common disease in pigsand dogs and is also recognized in horses, turkeys and possibly in young bulls. The manifestations and sequelae vary with thespecies. In pigs osteochondrosis includes osteochondritis dissecans, epiphysiolysis deformities of bones and arthropathy. See alsoleg weakness.