DDF tendon runs down to

DDF tendon runs down to

• A. Coffin bone
• B. Pastern bone
• C. Navicular bone
• D. Metacarpal bone

Answer: (A)

The deep digital flexor tendon ends where it inserts on the distal phalanx, the coffin bone, at the bottom of the horse’s hoof. This tendon travels down the limb and acts to flex the distal joint and help support weight. As it descends, it passes over the navicular bone, with the navicular bursa between tendon and bone, but the insertion point is the coffin bone, not the middle pastern bone or the navicular bone itself. The metacarpal (cannon) bone is up higher in the limb, so it isn’t the endpoint of this tendon.

The deep digital flexor tendon ends where it inserts on the distal phalanx, the coffin bone, at the bottom of the horse’s hoof. This tendon travels down the limb and acts to flex the distal joint and help support weight. As it descends, it passes over the navicular bone, with the navicular bursa between tendon and bone, but the insertion point is the coffin bone, not the middle pastern bone or the navicular bone itself. The metacarpal (cannon) bone is up higher in the limb, so it isn’t the endpoint of this tendon.