Abstract
The musculocutaneous nerve is derived from vertebral levels C-5 and C-6. In addition, contributions from C-4 and C-7 are reported to occur in over 50% of observed cases. The nerve originates from the lateral cord of the brachial plexus. It terminates just above the cubital fossa, by piercing the deep fascia lateral to the tendon on the biceps muscle, and deep to the cephalic vein. From its origin, the nerve passes distally and laterally in the arm. Initially, it is closely applied to the lateral surface of the axillary artery, but its course carries it away from this vessel and into the substance of the coracobrachialis muscle.
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References and Further Reading
Bassett, F. H. and Nunley, J. D. (1982) Compression of the musculocutaneous nerve at the elbow. J. Bone Joint Surg. 64A (No. 7), 1050–1052.
Mackey, D., Colbert, D. S., and Chater, E. H. (1977) Musculocutaneous nerve entrapment, Ir. J. Med. Sci., 146 (4), 100–102.
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© 1990 The Humana Press Inc.
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Turner, O.A., Taslitz, N., Ward, S. (1990). Musculocutaneous Nerve Entrapment. In: Handbook of Peripheral Nerve Entrapments. Humana Press. https://doi.org/10.1007/978-1-4612-4492-9_3
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DOI: https://doi.org/10.1007/978-1-4612-4492-9_3
Publisher Name: Humana Press
Print ISBN: 978-1-4612-8844-2
Online ISBN: 978-1-4612-4492-9
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