2023年7月5日 · The ulnar nerve is a terminal branch of the medial cord of the brachial plexus. It contains mainly fibers from the anterior rami of spinal nerves C8 and T1, but may sometimes carry C7 fibers as well. From its origin, the ulnar nerve courses distally through the axilla, arm and forearm into the hand.

2024年10月4日 · The ulnar nerve is a major peripheral nerve of the upper limb. In this article, we shall look at the anatomy of the ulnar nerve – its anatomical course, motor and sensory functions, and its clinical correlations.

The ulnar nerve is a nerve that runs near the ulna, one of the two long bones in the forearm. The ulnar collateral ligament of elbow joint is in relation with the ulnar nerve. The nerve is the largest in the human body unprotected by muscle or bone, so injury is common. [1]

2023年7月24日 · The ulnar nerve is one of the 5 terminal branches of the brachial plexus, arising from the medial cord. It supplies motor and sensory innervation to the upper extremity. The ulnar nerve originates from contributions of the ventral rami of C8 and T1 nerve roots.

In the lower part of the forearm, the ulnar nerve lies lateral to the flexor carpi ulnaris muscle and medial to the ulnar artery. The ulnar nerve enters the palm of the hand through the Guyon canal. The nerve and artery pass superficial to the flexor retinaculum.

2016年10月21日 · the internal anatomy of the ulnar nerve explains the predominance of hand symptoms in cubital tunnel syndrome fibers to FCU and FDP are central and hand intrinsic fibers are peripheral Ulnar tunnel syndrome

2024年9月25日 · The ulnar nerve enters the forearm from the arm in between the two heads of the flexor carpi ulnaris (FCU) muscle. It subsequently lies superficial to flexor digitorum profundus, deep to FCU and medial to the ulnar artery. It courses distally along the ulnar aspect of the forearm and at the wrist, the ulnar nerve runs lateral to the tendon of FCU.

2025年1月20日 · Origin and Course: The ulnar nerve originates in the axillary region near the shoulder, specifically from the medial cord of the brachial plexus. Pathway: It travels down the medial aspect of the arm, usually running posterior to the brachial artery.

2016年6月19日 · Upon reaching the wrist the ulnar nerve enters the palm of the hand via Guyon’s canal. From here it it innervates the palm of the hand and the ring/pinkey fingers. Branches of the ulnar nerve include: Motor (arm) via muscular branches: Ring/pinky flexion: the ulnar nerve innervates the medial portion of the flexor digitorum profundus muscle.

2018年8月8日 · In the flooring of the tunnel, the ulnar nerve crosses the ulnar collateral ligament. The ulnar nerve does not offer any branch in the axilla and in the arm near ulna bone. The nerve goes into the forearm by passing between the 2 heads of flexor carpi ulnaris.