What is Osteochondritis dissecans (OCD)?
Osteochondritis dissecans, commonly abbreviated OCD, is a condition in dogs where the immature articular cartilage has separated from the underlying bone. This is caused by osteochondrosis. Cracks in the cartilage of a weight baring surface can go on all the way down to the soft bone beneath the cartilage, and eventually a part of the joint cartilage can separate from the underlying structure. The resulting “flap” can be up to an inch across, but it can also be no bigger than a quarter of an inch. The flap will irritate the joint and cause pain for the dog. The joint will often become inflamed, and healing attempts can lead to scar tissue formation. Calcium deposits can also develop.
