Fractures of the pelvis are the most common fractures seen in dogs. These fractures are usually the result of major trauma. Generally, pelvic fractures cause acute, non-weight bearing lameness of the hind legs. These fractures are usually found in mature bones; young animals with trauma to the pelvis commonly will have other structures break before the pelvis. Because of the shape of the pelvis, box-like structure, these fractures normally occur in several locations at once including both the left and right sides at the same time. The treatment is usually surgery, or medical for lighter cases.