<prompt> Following anterior dislocation of the shoul-der, a pt develops weakness of flexion at elbow and lack of sensation over the lateral aspect forearm; nerve injured is:Radial nerveMusculocutaneous nerveAxillary nerveUlnar nerve  <response>: B i.e. Musculocutaneous nerve Flexion of the elbow is caused by biceps brachii musculo cutaneous nerve, brachialis muscolo cutaneous nerve and branchioradialis radial nerveQ. So the nerve injured may be either musculocutaneus or radial. So lets see the cutaneous nerve supply of these nerves. 