Large animal pelvic limb vessels and nerves

Question 1

Femoral Triangle

Answer 1

Femoral Triangle

• borders
  
  • sartorious
  • pectinious
  • inguinal ligament
• point of palpation- not helpful in horse
• vascular lacuna

Question 2

Draw this- lateral and medial blood supply pelvic limb

Answer 2

Question 3

Answer 3

Question 4

Where do you palpate equine for pulse at level of the metatarsus?

at level of digits?

Answer 4

at metatarsus= dorsal metatarsal artery

at digit= medial and lateral plantar/palmar digital arteries

Question 5

bovine vasculature

Answer 5

bovine very similar to equine

Question 6

Veins of equine pelvic limb

Answer 6

veins

• medial saphenous vein
  
  • crainial and caudal
• lateral saphenous vein
  
  • cranial and caudal

*** medial saphenous- landmark for stifle joint tap

Question 7

VAN

Answer 7

Question 8

what is this showing?

Answer 8

“bier block”

Lateral saphenous vein in cattle

you inject antibiotics or analgesic here and use a turnicate to stop venous flow. in so doing, the medication flows retrograde and gets to the whole limb really quickly

Question 9

The lumbosacral plexus

Answer 9

lumbosacral plexus, is where all the nerves we see in lab will be coming from. we will not see the plexus in lab but know where its all coming from!

Question 10

whys this cow like this?

Answer 10

the obturator nerve in cattle can be compressed during partuition.

• frogging
• cannot use muscles associated with the obturator nerve

Question 11

whats wrong with this baby?

Answer 11

Femoral nerve damage

• flexors of hip/ extensors of stifle
• cannot stand without ability to extend stifle

Question 12

Answer 12

Question 13

Answer 13

Question 14

nerves on hind limb only?

Answer 14

medial and lateral dorsal metarsal nerves

branch of the peroneal nerve

Question 15

Hindlimb regional anesthesia

Answer 15

Hindlimb regional anesthesia

• pudendal nerve block
  
  • caudal rectal n- anal sphincter
  • perineal n.- skin of perineum, scrotum, penile m.
  • dorsal n. of penis- dorsal penis, glans of penis
• technique
  
  • palpate ischiatic notch
  • inject sq between center of the notch and ischiatic tuberosity

Question 16

epidural

Answer 16

epidural

• local anestetic injected into the epidural apace
• lumbosacral junction in small animals

*** it is important to know where the phrenic nerve originates (CN 5,6,7) because if volume of epidural is too large, you may push it too cranially and affect cerfical nerves= paralysis of the diaphragm and respiratory paralysis

Question 17

Bier Block

Answer 17

Bier Block

• use turnicate on distal limb and inject local anestetic
• complete anesthesia of the limb
• wears off 4-12 minutes after cuff deflation
  *

Question 18

Question 19

Answer 19