Presentation A six-month-old intact female border collie presents with left forelimb lameness. A CT scan of the left shoulder is provided. Photo courtesy Dr. Kendra Freeman Challenge 1) Osteochondrosis is the disturbance of the normal process of endochondral ossification. a. True b. False 2) Risk factors for canine osteochondrosis include: a. Genetic factors b. Rapid growth c. Dietary factors d. Trauma e. All of the above 3) When osteochondrosis progresses to the formation of a cartilage flap, this is called: a. Osteochondritis dissecans b. Synovitis c. Retained cartilaginous core Reference Tobias, Karen. Manual of small animal soft tissue surgery. John Wiley & Sons, 2017.