Anatomical basis for repair of ulnar and median nerves in. 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. Well go over the treatment options and give you some exercises to. Top to bottom, ulnar nerve, median nerve, radial nerve. Pdf anatomy of the palmar branch of the ulnar nerve. A rare anatomical variation of the course of the ulnar nerve. Note the intraneural epineurium arrows and the fascicular group from the dorsal cutaneous branch located at the ulnar portion of the nerve.
Nerve crosssections were taken from 4 ulnar, 4 median, and 3 radial. The ulnar nerve descends down the arm, deep to the fcu on the surface of the flexor digitorum profundus. The ulnar nerve is a nerve that travels from the wrist to the shoulder. Connection between radial and ulnar nerves at humeral level. The ulnar nerve is the terminal branch of the medial cord of the brachial. Scanning electron micrograph of the left ulnar nerve, 150 millimeters proximal to the radial styloid process. 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. Our measurements were obtained by manual evaluation of sections. Anatomy of the nervous of forearm and hand of cebus.
Ulnar nerve entrapment occurs when theres extra pressure placed on your ulnar nerve in your arm. Its primary role is to provide nerve function to the hand. Check out the 3d app at more videos available on this video is a collaboratio. The ulnar nerve is a major peripheral nerve of the upper limb. We shall also consider the clinical correlations of the damage to the ulnar nerve. The motor branches of median and ulnar nerves that innervate superficial flexor muscles. It is one of the most clinically applicable nerves, due to its superficial course, and clinically apparent role in hand function. The ulnar nerve course motor sensory teachmeanatomy. Pdf the motor branches of median and ulnar nerves that. 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.
The anatomy of the ulnar nerve is described from its origin at the brachial plexus to its termination in the hand and digits. It gets its name from its location near the ulna bone, a. 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. It is obvious to all that the human hand represents a. In this article, we shall look at the applied anatomy of the nerve its anatomical course, motor functions and cutaneous innervation.