degenerative joint disease (DJD)

Any joint problem that has progressive degeneration of joint cartilage and the underlying (subchondral) bone. Occurs most frequently in the joints below the radius in the foreleg and femur in the hind leg. Some of the more common causes include repeated trauma, conformation faults, blood disease, traumatic joint injury, subchondral bone defects (OCD lesions) and excessive intra-articular corticosteroid injections. Also known as osteoarthritis.