Erb’s Palsy (C5-C6 root lesion)

Question 1

SSx of Erb’s palsy

Answer 1

weakness or wasting of the small muscles of the hands

Loss of sensation (hand and arm)

Waiter’s Tip Deformity
– shoulder adduction and internal rotation, elbow extension, forearm pronation, and wrist flexion

Question 2

Etiology of Erb’s palsy

Answer 2

excessive lateral traction of head and neck in opposite directions

• Result of severe trauma or during birth (shoulder dystocia)