As many of you have heard me say many times, a mammal is a mammal. What we are doing here at RadiologyRules is teaching you how to read films using Roentgen signs so it doesn’t really matter what species you are presented with. You are learning how to describe what you see and then make conclusions based on those findings. This case is an excellent example of what happens when a joint is unhappy. It is also one of the more common presenting complaints in our equine patients, especially upper level athletes- poor performance.