Nerve Injuries

Question 1

Most common abdominal surgery nerve injuries

Answer 1

Peroneal
Sciatic
Femoral

Question 2

Peroneal nerve injuries

Answer 2

L4-S2
Lateral tibial surface
Lateral displacement of knees w/o adequate support
Foot drop
Spontaneous resolution 3-6mo

Question 3

Sciatic nerve injury

Answer 3

L4-S3
Surgery in sacro-iliac fossa (usually gyn-onc)
Compromises knee flexion and foot dorsiflexon
Candy cane stirrups- external rotation of hip and incomplete flexion at the knee

Question 4

Femoral nerve injury

Answer 4

L2-L4
Use of large blade self-retaining retractor on thin pt over psoas
Exaggerated hip flexion in dorsal lithotomy
Sensory loss ant/med thigh
Quads-inability to lift knee

Question 5

Ilio-inguinal nerve injury

Answer 5

T12-L1
Directly cut or suture entrapment with pfannenstiel
Sensory loss medial labium manis
No motor loss

Question 6

Ilio-hypogastric

Answer 6

T12-L1
Directly cut or suture entrapment with pfannenstiel
Sensory loss over symphysis down to labium majus
No motor loss

Question 7

Pudendal nerve

Answer 7

S2,3,4
Exist pelvis through greater sciatic notch
Traverses lateral to ischial spine and enters is hip recital fossa through lesser sciatic notch

Question 8

Erb’s palsy

Answer 8

C5-C6
Waiter’s tip
Hangs at side medically rotated, forearm extended and pronated

Question 9

Klumpke’s paralysis

Answer 9

C8-T1
Problem for pianist
Hand and wrist paralysis, arm hangs glacially at side
Grasp reflex lost