有症状的膝关节软骨损伤患者的步态特征

Gwenllian F. Tawy , Beatrice Timme , Michael J. McNicholas , Leela C. Biant
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引用次数: 0

摘要

导言:人们对关节软骨损伤对膝关节生物力学的影响知之甚少。研究目的:本研究旨在确定膝关节无症状关节软骨缺损患者的步态特征。评估在带有 15 个摄像头的 3D 运动捕捉系统的跑步机上完成。参与者以自选速度、0° 倾角行走 2 分钟。在 20 个连续步态周期中对运动学和时空参数进行平均。对数据进行配对 t 检验或 Wilcoxon 秩 序检验,以比较膝关节之间的生物力学参数(α = 0.05)。结果患者(n = 30)的平均步行速度为 3.0 ± 0.7 km/h,步频为 60.4 ± 16.2 步/分钟。不同肢体的步长相当(P = .595)。膝关节在摆动过程中的最大屈曲度没有差异(P = .507),但低于之前报道的健康成年人。在前方平面,两个膝关节在整个步态周期中都保持内收状态(P = .385)。两个膝关节的最大内收幅度均大于之前报告的健康成年人的最大内收幅度。结论 膝关节软骨症状性病变患者受伤膝关节和对侧膝关节的步态特征基本相似。然而,与之前发表的健康成人数据相比,矢状面和额状面的一些步态参数是病态的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Gait characteristics of patients with symptomatic cartilage lesions of the knee

Introduction

Little is known about the impact of articular cartilage lesions on knee joint biomechanics.

Objectives

This investigation aimed to determine the gait characteristics of patients with symptomatic articular cartilage defects of the knee.

Methods

Gait analyses were performed at a regional joint preservation center. Assessments were completed on a treadmill with a 15-camera 3D motion-capture system. Participants walked for 2 minutes at a self-selected speed at 0° inclination. The resulting kinematic and spatiotemporal parameters were averaged across 20 consecutive gait cycles. Paired t tests or Wilcoxon ranked tests were performed on the data to compare biomechanical parameters between knees (α = 0.05).

Results

Patients (n = 30) walked at an average speed of 3.0 ± 0.7 km/h with a cadence of 60.4 ± 16.2 steps/min. Step lengths were comparable between limbs (P = .595). Maximum flexion during swing did not differ between knees (P = .507), but were lower than previously reported healthy adults. In the frontal plane, both knees remained in adduction throughout the gait cycle (P = .385). The maximal adduction reported in both knees were greater than previously reported for healthy adults. Maximal internal-external rotation patterns were comparable in stance (P = .475) and swing (P = .762) and to previous literature.

Conclusions

Gait characteristics were generally comparable between injured and contralateral knees of patients with symptomatic cartilage lesions of the knee. However, some parameters of gait in the sagittal and frontal plane were pathological when compared to previously published data from healthy adults.

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