Journal of rehabilitation welfare engineering & assistive technology (재활복지공학회논문지)

Rehabilitation Engineering And Assistive Technology Society of Korea (한국재활복지공학회)
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Evaluation of Intralimb Coordination in Transfemoral Amputee during Level Walking

대퇴절단인의 보행 시 하지 내 협응성 평가

  • 장윤희 (근로복지공단 재활공학연구소) ;
  • 정보라 (근로복지공단 재활공학연구소) ;
  • 강성재 (근로복지공단 재활공학연구소) ;
  • 류제청 (근로복지공단 재활공학연구소) ;
  • 문무성 (근로복지공단 재활공학연구소) ;
  • 고창용 (근로복지공단 재활공학연구소)
  • Received : 2016.05.11
  • Accepted : 2016.05.31
  • Published : 2016.05.31
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Abstract

The aims of this study were to evaluate the joint coordination between hip and knee joints in the transfemoral amputees, and its symmetry between sound and prosthetic limbs. Seven transfemoral amputees ($46.4{\pm}10.7-year-old$, $174.8{\pm}3.5cm$, $78.3{\pm}9.7kg$) and 7 able bodies ($24.0{\pm}4.5-year-old$, $174.5{\pm}5.9cm$, $66.9{\pm}9.4Kg$) participated in this study. They walked at a self-selected walking speed across a 10m level ground. Simultaneously angle and angular velocity in the hip and knee joint were measured by motion analysis system. Then continuos relative phase(CRP), standard deviations of CRP (CRP_SD) and symmetry index(SI) were calculated. In able bodies, there were no differences of the parameters between left and right limb(all p>0.05). However, significant differences between sound and prosthetic limb in most of the parameters, except for CRP for stance phase were shown (all p<0.05). There were differences in all SI between transfemoral amputees and able bodies (p<0.05). In conclusion, joint coordination was altered in transfemoral amputee during level walking and shown in interlimb asymmetry.

본 논문의 목적은 보행 시 대퇴절단인의 엉덩관절과 무릎관절의 협응을 평가하고, 건측과 의지측의 대칭성에 대하여 평가하는 것이다. 본 연구에는 7명의 대퇴절단인($46.4{\pm}10.7$세, $174.8{\pm}3.5cm$, $78.3{\pm}9.7kg$)와 7명의 비절단인($24.0{\pm}4.5$세, $174.5{\pm}5.9cm$, $66.9{\pm}9.4kg$)가 참여하였다. 이들은 편한 속도로 10m 평지보행을 하였으며, 이때 보행 분석시스템을 이용하여 엉덩관절과 무릎관절의 각도와 각속도를 측정하였으며, 이를 기반으로 입각기와 유각기의 연속상대위상(CRP), CRP의 표준편차(CRP_SD) 및 이들의 대칭지수(SI)를 계산하였다. 그 결과 비절단인의 경우 CRP 및 CRP_SD는 좌우가 차이가 없었지만 (모두 p>0.05), 대퇴절단인의 경우는 입각기의 CRP를 제외하고는 모두 유의한 차이를 보였다 (모두 p<0.05). 또한 비절단인과 대퇴절단인간의 SI는 모두 유의한 차이를 보였다 (all p<0.05). 결론적으로 대퇴절단인의 경우 하지의 협응이 변화되며, 건측과 의지측의 좌우 비대칭이 발생하는 것을 확인하였다.

Keywords

References

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