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:: (A) Radial nerve, (B) Musculocutaneous nerve, (C) Axillary nerve, (D) Ulnar nerve
Answer is B. B i.e. Musculocutaneous nerve Flexion of the elbow is caused by biceps brachii (musculo cutaneous nerve), brachialis ( muscolo cutaneous nerve) and branchioradialis (radial nerve)Q. So the nerve injured may be either musculocutaneus or radial. So lets see the cutaneous nerve supply of these nerves.