A regional nerve block used during lameness examination. The nerves blocked are the medial and lateral branches of the palmar/plantardigital nerve. The block can be applied at various positions on the pastern; the structures desensitised depend on the exact placement of the anaesthetic. Most frequently used sites of injection

1. Applied just above the collateral cartilages

2. At mid pastern, just behind the palpable vascular bundle.

A broad band of connective tissue on the palmar/plantar aspect of the fetlock region which holds the flexor tendons in position as their course deviates from the straight cannon region to the sloping pastern region.

The branches of the distal phalanx (coffin bone) that extend towards the back and to which the ungular/ lateral cartilages are attached.

An anatomical positional term: in humans it refers to the sole of the foot; in horses it refers to the back of the hindlimb beween the hoof and the tarsus (hock).