Resumen

CARLOTTO, Jorge Roberto Marcante; AMBROS, Luciana Estacia; DAL VESCO, Juarez Antônio  y  REICHERT, Paulo Roberto. Anomalus Origin and Traject of Musculocutaneous Nerve. Int. J. Morphol. [online]. 2009, vol.27, n.2, pp. 507-508. ISSN 0717-9502.  doi: 10.4067/S0717-95022009000200033.

The musculocutaneous is originated from the lateral fascicle in the brachial plexus and its fibers emerge mainly from the anterior nervous roots C5 and C6. During the routine dissection of the brachial plexus in a formolized corpse, its origin variation and passage was found. The nerve was originated on the lateral face of the median nerve and after its origin, crossed anteriorly to the coracobrachial muscle, without perforating it, from medial to lateral, proximal to distal, after to branch off. The anatomical variations found contribute to the anatomy study and they serve as alert for the surgeon in interventions in the axillary's cavity and in the previous store of the arm, preventing, thus, operational complications.

Palabras clave : Anatomy; Brachial Plexus; Musculocutaneous nerve.