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


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.


Sternocleidomastoid Supernumerary heads Anatomical variation 


Conflict of interest

None declared.


  1. 1.
    Bergman RA, Afifi AK, Miyauchi R (2014) Illustrated encyclopedia of human anatomic variation: opus I: muscular system: alphabetical listing of muscles.
  2. 2.
    Boaro SN, Fragoso Neto RA (2003) Topographic variation of the sternocleidomastoid muscle in a just been born children. Int J Morphol 21:261–264CrossRefGoogle Scholar
  3. 3.
    Hasan T (2011) Variations of the sternocleidomastoid muscle: a literature review. Internet J Hum Anat 1.
  4. 4.
    Matsuoka T, Ahlberg PE, Kessaris N, Iannarelli P, Dennehy U, Richardson WD, McMahon AP, Koentges G (2005) Neural crest origins of the neck and shoulder. Nature 438:347–355CrossRefGoogle Scholar
  5. 5.
    Natsis K, Asouchidou I, Vasileiou M, Papathanasiou E, Noussios G, Paraskevas G (2009) A rare case of bilateral supernumerary heads of sternocleidomastoid muscle and its clinical impact. Folia Morphol (Warsz) 68:52–54Google Scholar
  6. 6.
    Nayak SR, Krishnamurthy A, Sj MK, Pai MM, Prabhu LV, Jetti R (2006) A rare case of bilateral sternocleidomastoid muscle variation. Morphologie 90:203–204CrossRefPubMedGoogle Scholar
  7. 7.
    Prakash S, Ojha P, Gupta G (2013) Bilateral additional head of sternocleidomastoid muscle—a case report. Int J Curr Res Res 5:62–63Google Scholar
  8. 8.
    Raikos A, Paraskevas G, Triaridis S, Kordali P, Psillas G, Brand-Saberi B (2012) Bilateral supernumerary sternocleidomastoid heads with critical narrowing of the minor and major supraclavicular fossae: clinical and surgical implications. Int J Morphol 30:927–933CrossRefGoogle Scholar
  9. 9.
    Ramesh Rao T, Vishnumaya G, Prakashchandra Shetty K, Suresh R (2007) Variation in the origin of sternocleidomastoid muscle. A case report. Int J Morphol 25:621–623Google Scholar
  10. 10.
    Shinohara H (1996) A warning against revival of the classic tenets of gross anatomy related to nerve-muscle specificity. J Anat 188:247–248PubMedCentralPubMedGoogle Scholar
  11. 11.
    Sznajder JI, Zveibil FR, Bitterman H, Weiner P, Bursztein S (1986) Central vein catheterization: failure and complication rates by three percutaneous approaches. Arch Intern Med 146:259–261CrossRefPubMedGoogle Scholar

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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