Gait after anterior cruciate ligament reconstruction fails to exhibit task-sensitive modulations of dynamic stability: A preliminary analysis

IF 1.4 3区医学 Q4 ENGINEERING, BIOMEDICAL

Clinical Biomechanics Pub Date : 2025-08-01 DOI:10.1016/j.clinbiomech.2025.106634

Jamie M. Kronenberg , Elanna K. Arhos , Michael A. Riley , Nikita Kuznetsov , Susanne M. Morton , Karin Grävare Silbernagel , Laura C. Schmitt

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引用次数: 0

Abstract

Background

The purpose of this study was to test the hypothesis that individuals with anterior cruciate ligament reconstruction would demonstrate altered movement variability during walking on a split-belt treadmill, where the belts can move at the same speed or two different speeds, compared to uninjured control individuals.

Methods

Participants (14 with anterior cruciate ligament reconstruction (8 females; average age 21.3 years) and 14 matched controls) completed a split-belt treadmill paradigm of two conditions: baseline (3 min) and split (12 min; 2:1 belt speed ratio with test limb at 50 % of baseline speed). Time points of interest were the last minute of baseline (baseline period) and the first (initial response period) and last minute (sustained response period) of split. Recurrence quantification analysis of bilateral sagittal plane knee angle time series was completed to assess movement variability (Percent Determinism, Mean Line, Max Line) across all three periods of interest.

Findings

There was a statistically significant interaction of period and group on test limb Max Line (F(2,52) = 3.187, P = 0.049, partial ƞ² = 0.109). There was a large, statistically significant effect of period for the control group (F(2,26) = 16.785, P = 0.003, η² = 0.358). There was a small, not statistically significant effect of period for the anterior cruciate ligament reconstruction group (F (2,26) = 0.456 P = 0.639, partial η ² = 0.034). There was no difference in test limb Max Line between groups during any period of interest (P = 0.036–0.731).

Interpretation

Altered movement variability observed during the split-belt treadmill paradigm suggests that individuals with anterior cruciate ligament reconstruction may demonstrate a less responsive movement system compared to uninjured individuals.

查看原文本刊更多论文

前交叉韧带重建后的步态未能表现出动态稳定性的任务敏感调节：初步分析

本研究的目的是验证这样一种假设，即与未受伤的对照组相比，前交叉韧带重建的个体在分离式带跑步机上行走时表现出不同的运动变异性，在分离式带跑步机上，皮带可以以相同的速度或两种不同的速度移动。方法接受前交叉韧带重建的患者14例(女性8例；平均年龄21.3岁)和14名匹配的对照组完成了两种条件下的分裂带跑步机范式：基线（3分钟）和分裂(12分钟；2:1带速比与测试翼在50%的基线速度)。感兴趣的时间点为基线的最后一分钟（基线期）和分裂的第一（初始反应期）和最后一分钟（持续反应期）。完成双侧矢状面膝关节角度时间序列的复发量化分析，以评估所有三个感兴趣时期的运动变异性（百分比确定性，平均值线，最大线）。结果试验肢体Max Line的周期与组间交互作用有统计学意义（F(2,52) = 3.187, P = 0.049, partial ƞ2 = 0.109）。对照组的时间差异有统计学意义（F(2,26) = 16.785, P = 0.003, η2 = 0.358）。前交叉韧带重建术组患者手术周期差异有统计学意义（F (2,26) = 0.456, P = 0.639，部分η 2 = 0.034）。在任何研究期间，各组之间的测试肢体Max Line均无差异（P = 0.036-0.731）。解释：在裂带跑步机模式中观察到的运动变异性的改变表明，与未受伤的个体相比，前交叉韧带重建的个体可能表现出较低的反应性运动系统。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Clinical Biomechanics 医学-工程：生物医学

CiteScore

3.30

自引率

5.60%

发文量

189

审稿时长

12.3 weeks

期刊介绍： Clinical Biomechanics is an international multidisciplinary journal of biomechanics with a focus on medical and clinical applications of new knowledge in the field. The science of biomechanics helps explain the causes of cell, tissue, organ and body system disorders, and supports clinicians in the diagnosis, prognosis and evaluation of treatment methods and technologies. Clinical Biomechanics aims to strengthen the links between laboratory and clinic by publishing cutting-edge biomechanics research which helps to explain the causes of injury and disease, and which provides evidence contributing to improved clinical management. A rigorous peer review system is employed and every attempt is made to process and publish top-quality papers promptly. Clinical Biomechanics explores all facets of body system, organ, tissue and cell biomechanics, with an emphasis on medical and clinical applications of the basic science aspects. The role of basic science is therefore recognized in a medical or clinical context. The readership of the journal closely reflects its multi-disciplinary contents, being a balance of scientists, engineers and clinicians. The contents are in the form of research papers, brief reports, review papers and correspondence, whilst special interest issues and supplements are published from time to time. Disciplines covered include biomechanics and mechanobiology at all scales, bioengineering and use of tissue engineering and biomaterials for clinical applications, biophysics, as well as biomechanical aspects of medical robotics, ergonomics, physical and occupational therapeutics and rehabilitation.