Nerve and Joint blocks

Question 1

Where do you inject the local anaesthetic in a palmar/plantar digital nerve block?

Answer 1

Near by the nerve in the neurovascular bundle just proximal to the collateral cartilage. The nerve is the most medial part of the neurovascular bundle

Question 2

What structures to the palmar/plantar nerve block desensitize?

Answer 2

The caudal 1/3 of the foot, the navicular bone/bursa, the pedal bone, a variable amount of sole and the coffin joint.

Question 3

What are the two approaches to the coffin joint block?

Answer 3

Dorsal (1.5 cm proximal to the coronet and 1.5 cm off the midline) and Lateral (in the notch between palmar P2 and collateral cartilage, angled slightly dorsally)

Question 4

Where is local anaesthetic injected in an abaxial sesamoid nerve block (ABSNB)?

Answer 4

At the base of the proximal sesamoid bone where you can feel the nerve.

Question 5

What structures does an abaxial sesamoid nerve block desensitize

Answer 5

From the mid pastern distally. Be aware that in the hind limb dorsal metatarsal nerves may extend along dorsal P1 and provide some ‘feeling’.