Damage To Pelvic Limb Nerves

Question 1

What happens if the femoral n is damaged?

Answer 1

Failure to extend/fix the stifle. CANT BEAR WEIGHT. Loss of skin sensation to the medial surface of thigh, leg, paw (via saphenous)

Question 2

What happens if the obturator n is damaged?

Answer 2

Failure to adduct the limb

Compression during parturition in cows (Downers Syndrome)

Question 3

What happens if the sciatic n is damaged?

Answer 3

Paralysis of the hamstrings and all muscles distal to the tarsus.
Unable to flex tarsus.
Unstable tarsus.
Can result from intrapelvic pressure, dorsocranial hip luxations, trauma, inappropriate sx approaches

Question 4

What happens is the common peroneal n is damaged in the dog?

Answer 4

Straightening of tarsus, knuckling over

Loss of skin sensation to cranial aspect of crus and dorsal pets

Question 5

What happens if the common peroneal n is damaged in the horse?

Answer 5

Knuckling at fetlock and dragging of hoof

Question 6

What happens if the common trunk of the common peroneal and tibial is damaged?

Answer 6

Unable to extend/flex pelvic limb distal to stifle

Lack of sensory to distal limb

Question 7

What happens if the tibial n is damaged?

Answer 7

Hyperflexion of tarsus and overextension of digits.

Loss of sensation to caudal crus and plantar pes