Origin: C(7), C8, T1 (medial cord of Brachial plexus) Course: Motor innervation: 1. Forearm: Flexor carpi ulnaris (weakness of ulnar deviation and flexion of wrist), Medial half of flexor digitorum profundus (branches near the elbow) 2. Hand: branches near wrist Sensory innervation: Palmar branch at forearm and Digital branch at wrist … Continue reading Ulnar nerve Anatomy – Course and Innervation