期刊
CLINICAL BIOMECHANICS
卷 27, 期 5, 页码 460-465出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.clinbiomech.2011.11.011
关键词
Amputee; Artificial limbs; Gait; Knee; Microprocessor
资金
- National Center for Research Resources (NCRR), a component of the National Institutes of Health (NIH) [M01 RR000585]
- National Institutes of Diabetes and Digestive and Kidney Diseases [R01 DK63226, R01 DK66270]
- Otto Bock Health Care, Inc.
Background: 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. Methods: 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. Findings: 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. Interpretation: 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. (C) 2011 Elsevier Ltd. All rights reserved.
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