J Med Life Sci > Volume 15(1); 2018 > Article
Journal of Medicine and Life Science 2018;15(1):12-15.
DOI: https://doi.org/10.22730/jmls.2018.15.1.12    Published online October 30, 2018.
붓목뿔근 닿는곳 변이와 두힘살근 사이의 위치관계
Positional relationship between the posterior belly of digastric and the stylohyoid variant
In-youb Chang
chosun university
Correspondence:  In-youb Chang, Email: iyjang@chosun.ac.kr
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, here 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.
두힘살근(digastric), 붓목뿔근(stylohyoid)은 목뿔위근육에 속하는 직은 근육들로 매우 자료가 부족한 실정아다. 본 연구에서는 붓목뿔근의 닿는곳 변이에 대한 증례를 가지고 붓목뿔근과 두힘살근 뒤힘살과의 해부학적 위치관계를 확인하고자 하였다. 흡인성 폐렴으로 사망한 92세 남성의 해부과정에서 붓목뿔근 닿는곳 변이를 발견하여 두힘살근 뒤힘살과 붓목뿔근 사이의 국소적인 위치 관계를 관찰하였다. 양쪽 붓목뿔근은 두힘살근 뒤힘살 및 중간힘줄의 안쪽으로 주행하여 목뿔뼈에 닿았다. 붓목뿔근은 이는곳에서 두힘살근 중간힘줄에 힘줄로 닿는 변이를 보였다. 즉 붓목뿔근과 두힘살근 중간힘줄을 잇는 힘줄 존재하였다. 두힘살근 앞힘살의 형태를 관찰한 결과, 왼쪽은 덧힘살이 없었고 오른쪽은 덧힘살이 하나 더 있었다
Key Words: Stylohyoid, Digastric, Anatomical, variant
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