PNF and Movement

Korea Proprioceptive Neuromuscular Facilitation Association (대한고유수용성신경근촉진법학회)
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Effect of Artificial Leg Length Discrepancy on 3D Hip Joint Moments during Gait in Healthy Individuals

건강한 성인에서 인위적 다리길이 차이가 보행 중 3차원 엉덩관절 모멘트에 미치는 효과

  • Jo, Min-Ji (Department of Physical Therapy, Joenju University) ;
  • Kim, Dong-Hyun (Department of Physical Therapy, Joenju University) ;
  • Han, Dong-Wook (Department of Physical Therapy, Joenju University) ;
  • Choi, Eun-Jin (Department of Physical Therapy, Joenju University) ;
  • Kim, Ye-Seul (Department of Physical Therapy, Joenju University) ;
  • Kim, Yong-Wook (Department of Physical Therapy, Joenju University)
  • 조민지 (전주대학교 물리치료학과) ;
  • 김동현 (전주대학교 물리치료학과) ;
  • 한동욱 (전주대학교 물리치료학과) ;
  • 최은진 (전주대학교 물리치료학과) ;
  • 김예슬 (전주대학교 물리치료학과) ;
  • 김용욱 (전주대학교 물리치료학과)
  • Received : 2019.07.17
  • Accepted : 2019.08.20
  • Published : 2019.12.31
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Abstract

Purpose: This study investigated the three-dimensional moment values of the hip joint for subjects with artificial leg length alterations and subjects with unaltered leg lengths. Methods: Forty-two healthy adults (8 men, 34 women) participated in this study. The selected subjects were able to walk normally, had less than a 1 cm leg length discrepancy, and were instructed to wear shoes that fit their feet. The study participants performed 8 dynamic gait trails to measure the hip joint moment using a three-dimensional motion analysis system. Kinetic and dynamic three-dimensional gait analysis data were collected from infrared cameras, and a force plate was used to standardize the weight of each subject. Results: There were significant correlations between the differences in the leg length discrepancy during right extension, right flexion, right internal rotation, and left extension in hip joint moments (p<0.05). There were significant correlations between the differences in shoe conditions during left extension, right flexion, right extension, and right internal rotation in the hip moments (p<0.05). Conclusion: This study suggests that a leg length discrepancy can affect hip joint moment, which may further exacerbate musculoskeletal disorders, such as osteoarthritis in lower extremity joints. Therefore, further studies should be conducted to verify the impact of clinical interventions on differences in hip joint moment values to correct leg length discrepancies and prevent osteoarthritis in lower extremity joints.

Keywords

References

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