A microprocessor-controlled prosthetic knee and its gait symmetry assessment
10.3969/j.issn.1006-9771.2023.04.005
- VernacularTitle:一种智能膝关节假肢及其步态对称性评价
- Author:
Yibin ZHANG
1
;
Jianfeng LI
2
;
Hongliu YU
1
Author Information
1. School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
2. Medical Instruments Institute, Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
- Publication Type:Journal Article
- Keywords:
microprocessor-controlled prosthetic knee;
gait;
symmetry;
gait cycle
- From:
Chinese Journal of Rehabilitation Theory and Practice
2023;29(4):402-407
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveTo present a method for evaluating the gait symmetry of microprocessor-controlled prosthetic knee (MPK). MethodsA kind of proto-MPK, AiKneeOne, and a wearable gait collect system, were made. The phases of the first double-limb support, the single-limb support, the second double-limb support, and the swing were used to calculate symmetry index (SI), ratio Ⅰ (RI) and ratio II (RII). Five heathy persons walked on the treadmill wearing AiKneeOne at speeds of 0.5, 0.7, 1.1 m/s, and the indice were collected with the wearable gait collect system. ResultsUnder different velocities, The absolute value of SI and RII were very little and the RI were close to one at the phases of the first double-limb support and the second double-limb support, but they were not very satisfactory in the phases of the single-limb support and the swing. ConclusionThe developed MPK AiKneeOne is potential to reconstruct the gait of amputees, and the gait symmetry indice can be used to evaluate the wearing performance of MPK.
