|a1=There is marked distension of the digital sheath on the palmar aspect of the fetlock. The distal end of the swelling has a notched appearance. The horse has a slightly broken back hoof–pastern axis and low heels. | |a1=There is marked distension of the digital sheath on the palmar aspect of the fetlock. The distal end of the swelling has a notched appearance. The horse has a slightly broken back hoof–pastern axis and low heels. |