1, hoof is the part of the pig leg connected to the body, is the joint between the pig leg and the body, equivalent to the human knee, the south called hoof, the north called elbow, hoof meat is more tender, used to make braised meat and other dishes.
2, elbow is a part of the pig, refers to the muscle part of the pig's leg, the front elbow and the back elbow, the front elbow is also known as the front hoof, the skin is thick, tendon, gelatinous heavy, lean meat, even the meat with the skin to cook together, the taste of the fat but not greasy.