Nerve Palsies

Question 1

Sensory loss of skin overlying symphysis down to labium majus, nil motor loss

Answer 1

Ilio-hypgastric: (T12-L1) Directly cut or suture entrapment with Pfannenstiel.

Question 2

Sensory loss of medial aspect of labium majus, nil motor loss

Answer 2

Ilio-inguinal: (T12-L1) Directly cut or suture entrapment with Pfannenstiel.

Question 3

Sensory loss of anterior/medial leg & thigh, unable to lift knee (quadriceps)

Answer 3

Femoral: (L2-L4) Use of large blade self-retaining retractor, exaggerated hip flexion in dorsal lithotomy position

Question 4

Foot drop, foot inversion

Answer 4

Lateral Peroneal: (L4-S2) Lateral displacement of knee with insufficient knee support (as in dorsal lithotomy position), hyperflexion of knee and hip (as in MMK).

Question 5

Sensory loss of skin overlying symphysis down to labium majus, nil motor loss

Answer 5

Ilio-hypgastric: (T12-L1) Directly cut or suture entrapment with Pfannenstiel.