Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Kinematic Analysis of Thoraco-Lumbar Spine in Bad Postures During Daily Life

일상 생활 중의 나쁜 자세에 따른 흉·요추 관절의 기구학 해석

  • Han, Ah-Reum (Dept. of Mechanical Engineering, Kyung Hee Univ.) ;
  • Jeong, Ji-In (Dept. of Mechanical Engineering, Kyung Hee Univ.) ;
  • Feng, Jun (Dept. of Mechanical Engineering, Kyung Hee Univ.) ;
  • Kim, Yoon-Hyuk (Dept. of Mechanical Engineering, Kyung Hee Univ.)
  • 한아름 (경희대학교 기계공학과) ;
  • 정지인 (경희대학교 기계공학과) ;
  • 풍균 (경희대학교 기계공학과) ;
  • 김윤혁 (경희대학교 기계공학과)
  • Received : 2012.05.17
  • Accepted : 2012.07.23
  • Published : 2012.11.01
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Abstract

The spine is one of the most important skeletal joints, and it strongly affects the health of the musculoskeletal system. A normal spine has an S-shape, and it is very important to maintain this shape. Recently, spinal diseases such as low back pain have increased rapidly, especially among the elderly. Some of these diseases are caused by congenital spinal disorders and sporting and accident injuries as well as by bad postures. Improper spinal postures could generate excessive disc pressure, which is related to degeneration and pain. Therefore, in this study, we investigated the three-dimensional kinematic parameters of the thoraco-lumbar joint in several bad postures using a motion capture analysis technique. Different bad postures created a significant amount of flexion/extension, side bending, and axial rotation angle compared with neutral postures. Further study is necessary to investigate the disc pressure and ligament force due to the increase in joint rotation from the bad postures.

척추는 인간의 근골격계 건강에 큰 영향을 미치는 신체 부위 중 하나이다. 최근에 고령화 사회에 진입하게 되면서 요통과 같은 척추 질환이 급속하게 증가하고 있다. 이러한 척추 질환의 요인에는 선천적인 척추 장애나 스포츠 및 교통사고의 부상뿐만 아니라 일상생활에서 반복적으로 취하는 나쁜 자세도 포함된다. 잘못된 척추 자세는 척추 디스크에 압력을 주어 퇴행성 변화를 가져옴으로써 척추를 변형시키고 척추질환을 일으킨다. 따라서 본 연구에서는 여러 나쁜 자세를 취했을 때 흉추와 요추 관절의 3 차원 관절 각도를 분석하였다. 그 결과로부터 일상생활에서의 나쁜 자세가 굽힘/신전, 측면 굽힘, 축 회전 방향으로 척추 관절에 각도 변형을 일으키고 정상범위에서 벗어날 수 있음을 알 수 있었다. 향후 연구로써 척추관절의 각도변화가 디스크와 인대 및 근육 등에 미치는 영향에 대한 연구가 필요하다 생각된다.

Keywords

Acknowledgement

Supported by : 기초기술연구회

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