The Journal of the Korea Contents Association (한국콘텐츠학회논문지)

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Development of 4-Bar Linkage Orthotic Knee Joint

4절 연쇄 보조기무릎관절의 개발

  • 김장환 (한서대학교 의료보장구학과) ;
  • 이진복 (한서대학교 의료보장구학과)
  • Received : 2011.10.17
  • Accepted : 2011.10.31
  • Published : 2011.12.28
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Abstract

This study aims to develop the stance-control typed 4-bar linkage orthotic knee joint that replace the locked orthotic knee joint for the disabled with poliomyelitis and muscle weakness of lower limb. Unlike the existing stance-control orthotic knee joint, there are no needs of electric power, connecting circuit, bulky compomnets, etc, because this 4-bar linkage orthotic knee joint is controled by geometric locking. To evaluate the 4-bar linkage orthotic knee joint, a subject participated in this study who has been diagnosed with lower limb poliomyelitis and have used locked type orthotic knee joint. In the results of analysis of subject's gait using 3-dimentional motion analysis system, this 4-bar linkage orthotic knee joint provide the stability during stance phase and knee flexion during swing phase.

본 연구의 목적은 소아마비, 하지 근력약화 등의 장애인이 사용하는 잠금형 보조기무릎관절을 대체하기 위하여, 4절 연쇄 방식의 입각기조절형 보조기무릎관절을 개발하는 것이다. 본 연구에서 개발한 4절 연쇄 보조기무릎관절은 기존의 입각기조절형 보조기무릎관절과 달리, 기하학적으로 잠금상태가 제어되어 전기제어 부품 등이 필요하지 않으며 부피를 최소화하였다. 평가를 위하여, 소아마비로 진단받고 잠금형 보조기무릎관절을 사용해온 소아마비자가 대상자로 참여하였다. 대상자의 걸음걸이를 3차원으로 분석한 결과, 4절 연쇄 보조기무릎관절을 착용했을 때 입각기 동안 무릎관절의 신전이 유지되고 유각기 동안 무릎관절이 굴곡되며 자연스러운 걸음걸이를 보여주었다.

Keywords

References

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