Understanding Claw Hand Causes, Symptoms & Ulnar Nerve Injury Claw hand is a classic deformity seen in ulnar nerve palsy, most commonly affecting the ring and little fingers. In this video, StudyNeuro explains the mechanism behind claw hand, common injury sites such as the cubital tunnel, Guyon’s canal, and C8–T1 nerve roots, and key clinical features including weak grip and sensory loss. We also break down the ulnar paradox, explaining why distal ulnar nerve injuries produce more severe clawing