Additional Head of Sternocleidomastoid Muscle. Fascículo Adicional Del Músculo Esternocleidomastoideo

Abstract

Un caso raro de cabeza unilateral y adicional de músculo esternocleidomastoideo fue encontrado en un cadáver masculino adulto en el lado izquierdo. Esta cabeza se originó en el tercio medio de la clavícula y se unió al resto del músculo en su centro. Sin embargo, no había tal tropiezo adicional en el lado opuesto. No había variaciones en su suministro de inserción y nervio. Esta observación puede ser de importancia para los cirujanos de cabeza y cuello y cirujanos de cirugía plástica durante su práctica clínica A rare case of unilateral, additional head of sternocleidomastoid muscle was found in an adult male cadaver on the left side. This head originated from the middle one third of the clavicle and joined the rest of the muscle in its middle. However, there was no such additional slip on the right side. There were no variations in its insertion and nerve supply. This observation may be of importance to head and neck surgeons and plastic surgeons during their clinical practice.

Sternocleidomastoid Muscle in Fetuses: Classification, Morphometric Analysis, and Clinical Significance

“…As a result of the literature review, a total of 40 cases (57 SCM) were reached published in 32 case reports and 2 original studies related to SCM variations (Supplementary Table 10, Supplemental Digital Content 10, http://links.lww.com/SCS/E795). 5–7,10,14,16–44 In 40 cases, variations were detected using different methods such as dissection, surgery, magnetic resonance imaging, and ultrasonography. Distribution order of SCM types in the literature (40 subjects, 57 sides), from largest to smallest, was reported as Type 2a (35 sides)>Type 4 (9 sides)>Type 2b (4 sides)>Type 3 (3 sides)>Type 6 (2 sides)>Type 2c (1 side)=Type 2d (1 side)=Type 2e (1 side)=Type 5 (1 side) (Supplementary Table 10, Supplemental Digital Content 10, Supplemental Digital Content 10, http://links.lww.com/SCS/E795).…”