## Overview Osteochondritis dissecans of the hock is a developmental disease in which cartilage fails to ossify normally, most often at the distal intermediate ridge of the tibia. Young horses develop hock effusion (bog spavin) with or without lameness. Radiographs confirm the lesion, and arthroscopic removal has an excellent prognosis. ## Causes Disturbance of endochondral ossification during growth. ## Diagnosis Radiographs of the hock in a young horse with effusion. ## Treatment Arthroscopic fragment removal. Many horses are sound afterward and return to full athletic use. ## Recovery and Prognosis Excellent for most distal intermediate ridge lesions. ## Prevention Balanced growth management.
hock effusion (bog spavin) in a young horse; variable lameness; radiographic OCD lesion
## Overview Osteochondritis dissecans of the hock is a developmental disease in which cartilage fails to ossify normally, most often at the distal intermediate ridge of the tibia. Young horses develop hock effusion (bog spavin) with or without lameness. Radiographs confirm the lesion, and arthroscopic removal has an excellent prognosis. ## Causes Disturbance of endochondral ossification during growth. ## Diagnosis Radiographs of the hock in a young horse with effusion. ## Treatment Arthroscopic fragment removal. Many horses are sound afterward and return to full athletic use. ## Recovery and Prognosis Excellent for most distal intermediate ridge lesions. ## Prevention Balanced growth management.
hock effusion (bog spavin) in a young horse; variable lameness; radiographic OCD lesion