The lateral trochlear ridge of the femur is one of the most common sites for osteochondrosis. This condition is usually seen in young horses (6 months to 3 years old) but is occasionally identified in older horses. There is marked distension of the femoropatellar stifle joint capsule and slight to moderate lameness characterized by a stiff limb flight, lowered arc of flight of the foot with or without an intermittent roe-drag. Lameness may be aggravated by flexion of the limb. The condition may affect one or both limbs. Young horses with both stifles affected may become slightly roach-backed and have difficulties in getting up after laying down.
Diagnosis is confirmed by radiographic examination.
Treatment of Osteochondrosis
Without treatment lameness usually persists. Provided that the lesions are not too severe, surgery is generally successful.