Biomechanical analysis of gait improvement after total knee arthroplasty

XU Hang; LI Xiaotong; FENG Xinxin; AN Lun; SHI Yuanyuan; ZHANG Yu; ZHANG Ye; WANG Hui

doi:10.3969/j.issn.2096-3882.2021.09.003

Journal of Xuzhou Medical University > 2021 > 41(9): 635-639. > DOI: 10.3969/j.issn.2096-3882.2021.09.003

XU Hang, LI Xiaotong, FENG Xinxin, AN Lun, SHI Yuanyuan, ZHANG Yu, ZHANG Ye, WANG Hui. Biomechanical analysis of gait improvement after total knee arthroplasty[J]. Journal of Xuzhou Medical University, 2021, 41(9): 635-639. DOI: 10.3969/j.issn.2096-3882.2021.09.003

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Biomechanical analysis of gait improvement after total knee arthroplasty

1. School of Medical Imaging, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China;
2. Department of Equipment, the Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002;
3. The Second Clinical Medicine School, Xuzhou Medical University, Xuzhou, Jiangsu 221004;
4. Department of Orthopedics, the Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002

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Received Date: March 24, 2021
Revised Date: August 31, 2021

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Abstract

Abstract

Objective To explore the biomechanical changes of gait after total knee arthroplasty (TKA). Methods The gait data were collected from 18 unilateral TKA patients and 18 healthy subjects. The changes of gait parameters were compared between the surgical and health sides in the TKA group and also between the TKA and control groups. Results Compared with the control group, the TKA group presented remarkable decreases in step length, step frequency, walking speed, swing phase, the maximum flexion and the sagittal range of motion for the knee joint. Moreover, the TKA group showed decreases in the peak flexion torques of the lower limb joint, the peak ground reaction force in vertical and anteroposterior directions, compared with the control group. For the TKA group, the surgical side presented significant decreases in the maximum flexion and flexion-extension range within the knee joint, the ankle sagittal range of motion, and the medial peak of ground reaction force compared with the health side. Conclusions TKA patients show good gait symmetry after surgery, which however does not get back to normal; and post-operative rehabilitation training is still needed.
- total knee arthroplasty,
- gait analysis,
- biomechanics,
- knee joint

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