Most horsemen define a club foot as hoof and pastern angle of more than 60 degrees, making the foot more upright than normal. The affected hoof is usually stumpy with a short toe and long, upright heel. Contracture of the flexor muscles and deep digital flexor back tendon (which attaches to the coffin bone inside the hoof) results in the horse walking on the toe—and the heel area doesn’t get much wear. The hoof may have a steeper angle than the pastern; the hoof/pastern axis is often broken forward rather than straight.