18/01/2024
Doctors Of Physical Therapy
Tyre / Albuss
78837415 / 71358014
Erb's Paralysis .
🗣️Site of injury: .
The region of the upper trunk of the brachial plexus is called Erb's point. Six nerves meet here. Injury to the upper trunk causes Erb's Paralysis.
🗣️Causes of injury: .
Undue separation of the head from the shoulder, which is commonly encountered in
Birth injury
Fall on shoulder
During anaesthesia
🗣️Nerve roots involved:
Mainly C5
Partly C6.
🗣️Muscles paralysed:
Mainly: biceps, deltoid, brachialis and brachioradialis.
Partly: supraspinatus, infraspinatus and supinator.
🗣️Deformity:
Arm: Hangs by the side, adducted and medially rotated
Forearm: Extended and pronated
The deformity is known as "Policeman's tip hand" or "Porter's tip hand".
🗣️Disability:
Abduction and lateral rotation of the arm (shoulder).
Flexion and supination of forearm.
Biceps and supinator jerks are lost.
Sensations are lost over a small area over the lower part of the deltoid.