Assertion: arthritis's joint | /r/HasProperty | coffin
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text: The joints most often affected by arthritis include the knee, fetlock, coffin, hock, and pastern (where it is often referred to as “ringbone”).A 1999 study published in the Equine Veterinary Journal identified arthritic changes in a herd of wild mustangs, which led the researchers to conclude that arthritis was a natural part of the aging process in horses.