<prompt> Muscles paralysed in Erbs paralys are all except?BicepsTricepsBrachioradialisBrachiali  <response>: Ans. is b i.e., Triceps Erbs paralysis One region of upper trunk C5, C6 of the brachial plexus is called Erbs point where six nerves meet. o Injury at this point results in Erbs paralysis The injury is due to undue separation of the head from the shoulder, which may be seen in : ? Bih injury Fall on the shoulder During Anesthesia Clinical features of Erbs palsy Muscles paralysed : Mainly biceps brachii, deltoid, branchialis and brachioradialis. Paly supraspinatus, infraspinatus and supinator. Deformity position of the limb Arm : Hanges by the side; it is adducted and medially rotated Forearm : Extended and pronated The deformity is known as policemans tip hand or poers tip hand. Disability : The following movements are lost. Abduction and lateral rotation of the arm shoulder. Flexion and supination of the forearm. Biceps and supinator jerks are lost. Sensations are lost over a small area over the lower pa of the deltoid 