Nerves:Arm/Shoulder:Ulnar nerve course, relations and innervation

The ulnar nerve is one of the terminal branches of the brachial plexus and has motor and sensory supply to the forearm and hand. Origin The ulnar nerve originates as a terminal branch of the medial cord of the brachial plexus with nerve root fibres from C8-T1. Course Arm Medial to the axillary artery and subsequently the brachial artery on the coracobrachialis muscle in the anterior compartment.  The nerve passes to the posterior compartment through the medial intermuscular septum distally runni

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Overview of the course of the median nerve in the wrist and hand (A)

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Normal anatomy of the median and ulnar nerves. DorBUN dorsal branch of