Role of Electrodiagnosis in Ulnar Nerve Entrapments
Original Editor - Nehal Shah
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Introduction[edit | edit source]
Anatomy of Ulnar Nerve[edit | edit source]
Ulnar nerve is the continuation of Medial Cord of Brachial Plexus (C8-T1). It passes in the arm medial to brachial artery . It then enters cubital tunnel and enters the forearm. It supplies Flexor Carpi Ulnaris (FCU) and Flexor Digitorum Profundus (FDP) for ring and little finger. It enters the wrist from Guyon's canal where it divides into Deep Motor branch which supplies Abductor Digiti Minimi, third and fourth Lumbrical, Interossei, Deep head of Flexor Pollicis Brevis and Adductor Pollicis and a Superficial Sensory branch which gives sensory innervation to ulnar border of the ring finger and little finger [1]. Two sensory nerves arise from the Ulnar nerve in the forearm - Dorsal Ulnar Cutaneous Nerve which provides sensory innervation to the dorsal aspect the medial one and a half fingers and the associated dorsal hand area and a Palmar cutaneous nerve that provides innervation to the medial half of the hand.
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Resources[edit | edit source]
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References[edit | edit source]
- ↑ Davis DD, Kane SM. Ulnar Nerve Entrapment.
