#fetlock_joint__fetlockjoint__fetlock  the joint between the cannon bone and the pastern
  supertype:  articulatio__joint__articulation  (anatomy) the point of connection between two bones or elements of a skeleton (especially if the articulation allows motion)
  part of:  horse's_foot__horse'sfoot__horse's_hoof__horse'shoof  the hoof of a horse
     part of:  horse__Equus_caballus  solid-hoofed herbivorous quadruped domesticated since prehistoric times

No statement uses or specializes fetlock_joint; click here to add one.