CURBS are defined as an enlargement or bowing on the planter aspect (back) of the hock and upper cannon.

They create a convex profile, best appreciated from the side, on the back of the calcaneus, central and distal tarsal bones and the upper metacarpal bones. Curbs are sometimes differentiated into two categories, false and true curbs. False curbs are a conformational deformity of the bones of the hock and upper cannon. They are generally present from a young age or are a result of injuries.