Erb’s paralysis

Site of injury

One region on upper trunk of Brachial plexus where 6 nerves meet (Erb’s point)

Causes

Undue separation of head from the shoulder due to –

 Birth injury

 Fall on the shoulder

 During anaesthesia

Nerve Roots

C5-C6

Muscles involved

Biceps brachii, Deltoid, Brachialis, Brachioradialis, Supraspinatus, Infraspinatus & Supinator (SBI Bank South Delhi Branch)

Deformity

Porter’s tip/ Policeman’s tip/ Waiter’s tip hand

Disability

 Abduction & Lateral rotation of the arm and shoulder joint

 Extension and supination of the forearm

 Biceps and supinator jerks are lost

 Loss of sensation over the lower part of Deltoid region

– Jainam Shah

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