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 ulnar nerve branches off the brachial plexus nerve system and travels down the back and inside of the arm to the hand. The ulnar nerve transmits electrical signals to muscles in the forearm and hand.

Nov 16, 2025 · The ulnar nerve is one of the major nerves of the upper extremity. Injury to the ulnar nerve, known as lesions, can cause symptoms of weakness, tingling, and numbness.

Sep 17, 2024 · What Does the Ulnar Nerve Do? The ulnar nerve function is to control movement (motor control). It carries signals from the brain that activate the muscles in your forearms, wrist, and hand.

Aug 7, 2023 · The ulnar nerve relays sensory information back to the central nervous system in the hand from the ulnar border of the ring finger, the small finger, and spanning the dorsal and volar aspect of …

The ulnar nerve originates from C8-T1 nerve roots which form the medial cord of the brachial plexus. The ulnar nerve runs down the hand, where it passes behind the medial epicondyle of the humerus …

May 31, 2018 · Ulnar wrist pain is very common and refers to pain on the pinkie side of the wrist. It can result from fractures, arthritis, and other causes.

Feb 27, 2025 · Your ulnar nerve is one of five nerve branches of your brachial plexus. This nerve bundle sends sensory information and helps you move your shoulders, arms and hands.

Nov 6, 2025 · 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 …

Dec 3, 2018 · Ulnar nerve entrapment occurs when there’s extra pressure placed on your ulnar nerve in your arm. Learn the causes, symptoms, and how to treat it.