Approach to Equine Local Anaesthesia Flashcards
Which local anaesthetic should you use for a palmar digital nerve block?
Mepiviciane
Describe how to perform a palmer digital nerve block
Insert needle palmar to medial neurovascular bundle, axial to collateral cartilage, aiming distally.
List four structures that are desensitixed by a palmer digital nerve block
Heel bulb + sole
Navicular bone
Laminae
DIP joint
Describe how you would perform an abaxial sesamoid nerve block
Palpate neurovascular bundle on the palmarolateral and palmaromedial fetlock over annular ligament.
Insert palmar to medial neurovascular bundle aiming distally.
What is the distal interphalangeal joint also known as?
Coffin joint
How would you approach the distal interphalangeal joint block?
Dorsally
Describe how you would perform a distal interphalangeal nerve block
Dorsal approach
0.5-1cm above the hoof wall
Vertically down
Approximately 2-3 cm deep
Which structures may a large volume and long dural of local anaesthetic in the distal interphalangeal joint also desensitize?
Navicular bursa
Palmar digital nerves
List the four joints of the hock
Tibiotarsal = tarsocrural
Proximal intertarsal = talocalcaneocentral
Distal intertarsal = centrodistal
Tarsometatarsal
Describe the communications between the joints of the hock
Distal intertarsal - tarsometatarsal: 25%
Proximal intertarsal- distal intertarsal - centrodistal: 10%
Tarsomatatarsal: all
Describe how you would perform a tarsometatarsal joint block
Horse weight bearing
Lateral approach
Palpate the top of the lateral splint (MTIV), divot just above is site for needle entry
Aiming from caudolateral slight distal to perpendicular
Depth 1-2 cm
Which stucture may the TMT joint block may also desensitise?
Deep branch of the lateral plantar nerve which supplies the plantar metatarsal nerves
