Journal of Medicine and Life Science

Institute for Medical Science (제주대학교 의과학연구소)
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Positional relationship between the posterior belly of digastric and the stylohyoid variant

붓목뿔근 닿는곳 변이와 두힘살근 사이의 위치관계

  • Han, Ji Yong (Medical Course, School of Medicine, Jeju National University) ;
  • Yoon, Sang-Pil (Department of Anatomy, School of Medicine, Jeju National University) ;
  • Chang, In-Youb (Department of Anatomy, College of Medicine, Chosun University)
  • 한지용 (제주대학교 의학전문대학원 의학과) ;
  • 윤상필 (제주대학교 의학전문대학원 해부학교실) ;
  • 장인엽 (조선대학교 의과대학 해부학교실)
  • Received : 2018.05.08
  • Accepted : 2018.05.24
  • Published : 2018.06.30
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Abstract

Digastric and stylohyoid muscles are located in the suprahyoid region. There have been few studies about the general morphology of stylohyoid muscle and its relationship with digastric muscle. During routine educational dissection, unusual insertion of bilateral stylohyoid muscle was found in the cadaver of a 92-year-old Korean male, whose cause of death was 'aspiration pneumonia'. Stylohyoid muscle arose from the styloid process, and inserted onto the intermediate tendon of digastric muscle and the hyoid bone on both sides. Each digastric muscle normally consists of an anterior belly, intermediate tendon and a posterior belly. In this cadaver, there were two anterior bellies on right side while one anterior belly was found on left side. Stylohyoid muscle ran medial to the intermediate tendon of digastric muscle on both sides. The anatomical relationship between stylohyoid and digastric muscles was reviewed based on morphological and embryological point of view.

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References

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