Some fracture reductions require that the bone forceps jaws be angled from the handles. Such forceps require:
1. A sophisticated hinge mechanism to allow the jaws to maintain alignment as they open and close.
2. A special locking device which can cope with the laxity at the hinge.
The spinlock and the special jaw make the instrument very nice to use but very expensive.
The veterinary pattern stands up from the bone in use, where the human pattern sits down and falls away which is generally less use in veterinary