Published in:
01-06-2019 | Anatomic Variations
Bilateral supernumerary clavicular heads of sternocleidomastoid muscle in a Korean female cadaver
Authors:
Ji-Su Oh, Chae-Eun Kim, Jinu Kim, Sang-Pil Yoon
Published in:
Surgical and Radiologic Anatomy
|
Issue 6/2019
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Abstract
Many anatomical variants on the sternocleidomastoid muscle have been reported. In this study, supernumerary clavicular heads of sternocleidomastoid muscle in a Korean female cadaver were bilaterally displayed. The observed supernumerary heads were classified as follows: one sterno-mastoid, one cleido-occipital and one cleido-mastoid on the right side, and one sterno-mastoid-occipital, four cleido-occipitals, and one cleido-mastoid on the left side. The sterno-mastoid and sterno-mastoid-occipital and the cleido-occipital made the superficial layer of the sternocleidomastoid muscle, while others made deep layer. We discussed clinical relevance and developmental basis of these muscular variations important for clinicians and anatomists.