Gait asymmetry of transfemoral amputees using mechanical and microprocessor-controlled prosthetic knees.

Gait asymmetry of transfemoral amputees using mechanical and microprocessor-controlled prosthetic knees.
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DOI:
10.1016/j.clinbiomech.2011.11.011
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发表时间:
2012-06
期刊:
Clinical biomechanics (Bristol, Avon)
影响因子:
--
通讯作者:
Frigo CA
Frigo CA
中科院分区:
其他
文献类型:
--
作者:
Kaufman KR;Frittoli S;Frigo CA

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截肢者行走时步态不对称,这可能会导致未来的肌肉骨骼退行性变化。本研究的目的是比较主动经股截肢者使用被动机械膝关节或微处理器控制膝关节时的步态不对称性。对 15 名受试者(12 名男性和 3 名女性;年龄 42,范围 26-57)进行了客观 3D 步态测量。研究参与者是机械假肢的长期使用者(平均 20 年,范围 3-36 岁)。使用一种新颖的方法计算关节对称性,该方法包括整个步态周期的整个波形。使用不同膝关节假体时,髋、膝、踝运动学对称性无显着差异。相比之下,结果表明,使用微处理器控制的膝盖时,下肢关节动力学对称性显着改善。使用微处理器控制的膝关节改善了步态对称性。这些改进可能会减少截肢者经常经历的退行性肌肉骨骼变化。
Amputees walk with an asymmetrical gait, which may lead to future musculoskeletal degenerative changes. The purpose of this study was to compare the gait asymmetry of active transfemoral amputees while using a passive mechanical knee joint or a microprocessor-controlled knee joint. Objective 3D gait measurements were obtained in 15 subjects (12 men and 3 women; age 42, range 26–57). Research participants were longtime users of a mechanical prosthesis (mean 20 years, range 3–36 years). Joint symmetry was calculated using a novel method that includes the entire waveform throughout the gait cycle. There was no significant difference in hip, knee and ankle kinematics symmetry when using the different knee prostheses. In contrast, the results demonstrated a significant improvement in lower extremity joint kinetics symmetry when using the microprocessor-controlled knee. Use of the microprocessor-controlled knee joint resulted in improved gait symmetry. These improvements may lead to a reduction in the degenerative musculoskeletal changes often experienced by amputees.
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