Journal of Morphological Sciences
Journal of Morphological Sciences
Original Article

Seventh cervical nerve perforating the middle scalene muscle: a possible clinical and surgical application

Silva, A. T.; Gama, H. V. P.; Siqueira, S. L.; Jennecy Sales Cavalcanti; Franco, A. G.; Casagrande, M. M.

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Introduction: In most of cases, the emergency of the nervous roots of the brachial plexus in the posterior cervical triangle occur between the anterior and middle scalene muscles. However, anatomic variations in the brachial plexus are not rare. Methods: In the laboratory of Human Anatomy of the "Faculdade de Ciências Médicas de Minas Gerais" 106 cadavers were dissected. There were dissected the cervical region of all of the cadavers bilaterally. Results: In routinely dissection in the laboratory of human anatomy of the "Faculdade de Ciências Médicas de Minas Gerais" we’ve found in the left cervical region of a male cadaver the ventral branch of the seventh cervical nerve (C7) perforating the substance of the middle scalene muscle. Conclusion: Professionals that work with this region on the practice must pay attention to this and other variations in the constitution of the brachial plexus in the clinic and surgical procedures to avoid complications.


brachial plexus, scalene muscles, anatomic variation
587cb4c37f8c9d0d058b4860 jms Articles
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J. Morphol. Sci.

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