Ulnar nerve anatomy pdf human

Ulnar nerve entrapment occurs when theres extra pressure placed on your ulnar nerve in your arm. In this article, we shall look at the applied anatomy of the nerve its anatomical course, motor functions and cutaneous innervation. The anatomy of the ulnar nerve is described from its origin at the brachial plexus to its termination in the hand and digits. Our measurements were obtained by manual evaluation of sections. Note the intraneural epineurium arrows and the fascicular group from the dorsal cutaneous branch located at the ulnar portion of the nerve. It is obvious to all that the human hand represents a. A rare anatomical variation of the course of the ulnar nerve. Anatomical basis for repair of ulnar and median nerves in. Pdf the motor branches of median and ulnar nerves that. Pdf anatomy of the palmar branch of the ulnar nerve. Well go over the treatment options and give you some exercises to.

Explore and learn about the ulna with our 3d interactive anatomy atlas. It gets its name from its location near the ulna bone, a. This nerve is mainly responsible for movement of the hand. But connection between its radial and ulnar nerves at humeral level is very rare. The ulnar nerve can broadly be described as the nerve of the hand, as the nerve innervates the vast majority of the intrinsic hand muscles. The ulnar nerve is a major peripheral nerve of the upper limb. Scanning electron micrograph of the left ulnar nerve, 150 millimeters proximal to the radial styloid process. Nerve crosssections were taken from 4 ulnar, 4 median, and 3 radial. Anatomy of the nervous of forearm and hand of cebus. The critical anatomy surrounding the cubital tunnel and guyon canal is emphasized, and clinically relevant anatomic variations, muscle anomalies, and peripheral nerve anastomoses are described. The ulnar nerve is one of the arms major nerves and is part of the brachial plexus nerve system. Check out the 3d app at more videos available on in this vi. Ulnar nerve entrapment is the second most common compression neuropathy in the upper extremity after carpal tunnel syndrome. The motor branches of median and ulnar nerves that innervate superficial flexor muscles.

Pdf the palmar cutaneous branch of the ulnar nerve pcun has received little attention in the literature, and to the authors knowledge, has. The ulnar nerve is the terminal branch of the medial cord of the brachial. The ulnar nerve serves two flexor muscles and a variety of small muscles of the wrist and hand. The ulnar nerve course motor sensory teachmeanatomy. It is one of the most clinically applicable nerves, due to its superficial course, and clinically apparent role in hand function.

At the junction of the middle and distal third of the forearm, the ulnar nerve passes ulnar to the ulnar artery and both lie subjacent to the fcu. Its primary role is to provide nerve function to the hand. Lying posterior to the vessels this nerve inclines backwards away from them and pierces the medial intermuscular septum in the lower third of the arm, accompanied by the superior ulnar collateral artery and a branch of the radial nerve to the medial head of triceps the ulnar collateral nerve. We shall also consider the clinical correlations of the damage to the ulnar nerve. Top to bottom, ulnar nerve, median nerve, radial nerve.