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Surgical and Radiologic Anatomy

, Volume 37, Issue 7, pp 871–873 | Cite as

Bilateral four heads of the sternocleidomastoid muscle

  • So-Yeon Kim
  • Han-Bin Jang
  • Jinu Kim
  • Sang Pil YoonEmail author
Anatomic Variations

Abstract

The sternocleidomastoid muscle shows a wide range of variations including supernumerary muscular heads. We found a rare variation in the sternocleidomastoid muscle with bilateral supernumerary heads in a 67-year-old Korean male cadaver. Bilateral four muscle bellies were recorded: two sternomastoids, one cleido-occipital and one cleido-mastoid occipital on the right side, and one sternomastoid, one cleido-occipital and two cleido-mastoids on the left side. The variation of bilateral four heads on sternocleidomastoid muscle is important to surgeons and anesthetists for clinical using.

Keywords

Sternocleidomastoid Supernumerary heads Anatomical variation 

Notes

Conflict of interest

None declared.

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Copyright information

© Springer-Verlag France 2014

Authors and Affiliations

  • So-Yeon Kim
    • 1
  • Han-Bin Jang
    • 1
  • Jinu Kim
    • 2
  • Sang Pil Yoon
    • 2
    Email author
  1. 1.Medical Course, School of MedicineJeju National UniversityJejuRepublic of Korea
  2. 2.Department of Anatomy, School of MedicineJeju National UniversityJejuRepublic of Korea

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