Stability of early gait after unicompartmental knee arthroplasty

doi:10.12307/2024.024

Abstract

Abstract: BACKGROUND: For the patients who have undergone unicompartmental knee arthroplasty, although the surgical effect is clear, there is still a lack of effective quantitative evaluation tools, and it is necessary to further explore the early postoperative gait and stability changes.
OBJECTIVE: To investigate the changes in gait and stability before and after unicompartmental knee arthroplasty.
METHODS: From May 2021 to May 2022, 30 patients aged (63.80±9.31) years who planned to perform unilateral unicompartmental knee arthroplasty in the Department of Joint Surgery, Affiliated Hospital of Xuzhou Medical University were selected as the unicompartmental knee arthroplasty group. 15 healthy elderly patients aged (61.28±8.60) years without a history of hip and knee pain and hip and knee joint dysfunction were recruited as the control group. Hospital for special surgery scores, stability parameters (center of pressure path length, 95% confidence ellipse area) and gait parameters (pace, stride length, stride frequency, gait cycle, and the proportion of single support period) were recorded and compared in the control group and unicompartmental knee arthroplasty group before operation, 1 and 3 months after operation.
RESULTS AND CONCLUSION: (1) There was no significant difference in the step frequency between the patients 1 month after operation and those before operation in the unicompartmental knee arthroplasty group (P > 0.05). The stability of 1 month after operation was worse than that before operation, and other parameters of 1 month after operation were better than those before operation, and the difference was statistically significant (P < 0.05). (2) Hospital for special surgery score, gait and stability parameters at 3 months after operation were better than those before operation (P < 0.05). (3) Compared with the control group, the pace, stride length, stride frequency, and the proportion of single support period of the unicompartmental knee arthroplasty group were significantly lower before and 3 months after operation. Center of pressure path length, 95% confidence ellipse area and gait cycle were greater in the unicompartmental knee arthroplasty group than those in the control group, with statistically significant differences (P < 0.05). (4) It is indicated that gait analysis is an effective means to quantitatively evaluate the rehabilitation status after unicompartmental knee arthroplasty. The early gait recovery after unicompartmental knee arthroplasty is good, but the gait frequency improvement is not obvious and the stability is poor 1 month after the operation.

Key words: unicompartmental knee arthroplasty, knee osteoarthritis, gait analysis, postural balance, recovery

CLC Number:

Gu Xu, Zheng Xin, Shi Sifeng, Lu Renxiang, Cao Jie, Li Hongwei. Stability of early gait after unicompartmental knee arthroplasty[J]. Chinese Journal of Tissue Engineering Research, 2024, 28(12): 1875-1879.

Figures/Tables 6

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