Unilateral Absence of the Musculocutaneous Nerve - A Case Report

Arpitha shetty

doi:10.21760/jaims.9.9.54

Arpitha shetty Associate Professor, Department of Shareera Rachana, Adichunchanagiri Ayurvedic Medical College Hospital and Research Centre, Nagarur, Bengaluru, Karnataka, India.

DOI: https://doi.org/10.21760/jaims.9.9.54

Keywords: Brachial plexus, Anatomical Variations, Median Nerve, Musculocutaneous Nerve

Abstract

The musculocutaneous nerve, which derives from the brachial plexus's lateral cord and gets fibers from C5, C6, and C7, innervates the muscles of the anterior compartment of the arm. The nerve travels between the brachialis and biceps brachii, piercing the Coracobrachialis muscle. A male cadaver's left upper limb was routinely dissected, and it was noted that the median nerve's branches supplied the muscles in the left arm's anterior compartment whereas the musculocutaneous nerve was absent. Understanding musculocutaneous nerve variations is essential for surgical interventions.

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References

A.K Dutta, Essentials of Human Anatomy, part-3, 5th edition, Lenin Saranee, Kolkata, 2017, pp232, p41-43.

Haviarova, Z.; El Falougy, H.; Killingerova, A.; Matejcik, V. Variation of the median nerve course and its clinical importance. Biomed. Pap. Med. Fac. Univ. Palacky Olomouc. Czech Repub. 2009, 153, 303–306. [CrossRef] [PubMed]

Uzun A, Seelig LL Jr. A variation in the formation of the median nerve: communicating branch between the musculocutaneous and median nerves in man. Folia Morphol (Warsz). 2001;60(2):99‒101.

Limb Musculature. In: Sadler TW, editor. Langman’s Medical Embryology. 9th Edition. Lippincott Williams & Wilkins. Philadelphia 2004. p. 203-06.

Le Minor JM. A rare variation of the median and musculocutaneus nerve in man. Arch Anat histol Embryol 1990; 73:33-42.

Gumsburun E, Adiguzel E. A variation of the brachial plexus characterised by the absence of the musculocutaneous nerve: a case report. Surg Radiol anat 2000; 22:63-65.

Sud M. Absence of the musculocutaneous nerve and innervation of corachobrachialis, biceps brachii and brachialis from the median nerve. J Anat Soc India 2000; 49:176-177.

Song WC, Jung HS, Shin C, Lee BY, Koh KS. A variation of the musculocutaneous nerve absent.Yonsei Med J 2003; 44:1110 1113.

Nakatini T, Shigenori T, Mizukami S. Absence of the musculocutaneus nerve with innervations of corachobrachialis, biceps brachii, brachialis and the lateral border of the forearm by branches from the lateral cord of the brachial plexus. J Anat 1997; 191:459-460.

Beheiry EE. Anatomical variations of the median nerve distribu¬tion and communication in the arm. Folia Morphol (Warsz). 2004;63(3):313-8.5

Prasada Rao PV, Chaudhary SC. Absence of musculocutaneous nerve: two case reports. Clin Anat. 2001;14(1):31-5.4.

Joshi SD, Joshi SS, Athavale SA. Hitch hiking fibres of lateral cord of brachial plexus and the median nerve in search of their destination. J Anat Soc India 2008;57(01):26–29

Song WC, Jung HS, Kim HJ, et al. A variation of the musculocutaneous nerve absent. Yonsei Med J. 2003;44(6):1110‒1113.

Dawn D. Hunter, Matthew J. Zdilla. The absent musculocutaneous nerve: A systematic review, Translational Research in Anatomy 2022, pp7 p2-5