If you’ve ever been confused by the differences between osteochondrosis and osteochondritis dissecans, or wondered whether these are the same as developmental orthopedic disease (DOD) or just examples of it, you’re not alone. For decades, diseases of the bones, joints, and cartilage in young horses have sparked many word-slinging debates among researchers.

But as science leads to better understanding of what the various lesions in growing horse skeletons are, and how they get there, researchers are finally coming up with clearer terminology for them.
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