<prompt> Which of the following DOES NOT indicate ulnar nerve injury?Clawing of medial 2 digitsFroment sign is presentAbductor Pollicis longus palsyLoss of sensory supply of medial little finger and medial half of ring finger  <response>: Ans. C. Abductor Pollicis longus palsy The abductor pollicis longus muscle is innervated by the posterior interosseous nerve, which is a continuation of the deep branch of the radial nerve after it passes through the supinator muscle. Froments sign tests for palsy of the ulnar nerve, specifically, the action of adductor pollicis. To perform the test, a patient is asked to hold an object, usually a flat object such as a piece of paper, between their thumb and index finger pinch grip. The examiner then attempts to pull the object out of the subjects hands. A normal individual will be able to maintain a hold on the object without difficulty. However, with ulnar nerve palsy, the patient will experience difficulty maintaining a hold and will compensate by flexing the FPL Flexor Pollicis Longus of the thumb to maintain grip pressure causing a pinching effect. Injury of the ulnar nerve at different levels causes varying motor and sensory deficits. 