Brachial Plexus Palsy

Question 1

When is it too late to perform neurotization for brachial plexus palsy

Answer 1

20-24 months is when we see loss of motor end plates, therefore neurotization would be useless

at this point, need free muscle transfers to restore function

Question 2

what is the optimal neurotization for an Erb-Duchenne palsy?

Answer 2

ulnar nerve to biceps

median nerve to brachialis

Question 3

Innervation to subscapularis is from:

Answer 3

the upper and lower subscapular nerves

• derived from posterior cord
• the lower subscap nerve has a variant that branches directly off the axillary nerve

Question 4

The lateral cord terminates as the:

Answer 4

musculocutaneous nerve