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How reliable are knee kinematics and kinetics during side-cutting manoeuvres?

Sankey, SP and Raja Azidin, RM and Robinson, MA and Malfait, B and Deschamps, K and Verschueren, S and Staes, F and Vanrenterghem, J (2015) How reliable are knee kinematics and kinetics during side-cutting manoeuvres? Gait and Posture, 41 (4). pp. 905-911. ISSN 1879-2219

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Abstract

INTRODUCTION: Side-cutting tasks are commonly used in dynamic assessment of ACL injury risk, but only limited information is available concerning the reliability of knee loading parameters. The aim of this study was to investigate the reliability of side-cutting data with additional focus on modelling approaches and task execution variables. METHODS: Each subject (n=8) attended six testing sessions conducted by two observers. Kinematic and kinetic data of 45° side-cutting tasks was collected. Inter-trial, inter-session, inter-observer variability and observer/trial ratios were calculated at every time-point of normalised stance, for data derived from two modelling approaches. Variation in task execution variables was regressed against that of temporal profiles of relevant knee data using one-dimensional statistical parametric mapping. RESULTS: Variability in knee kinematics was consistently low across the time-series waveform (≤5°), but knee kinetic variability was high (31.8, 24.1 and 16.9Nm for sagittal, frontal and transverse planes, respectively) in the weight acceptance phase of the side-cutting task. Calculations conveyed consistently moderate-to-good measurement reliability. Inverse kinematic modelling reduced the variability in sagittal (∼6Nm) and frontal planes (∼10Nm) compared to direct kinematic modelling. Variation in task execution variables did not explain any knee data variability. CONCLUSION: Side-cutting data appears to be reliably measured, however high knee moment variability exhibited in all planes, particularly in the early stance phase, suggests cautious interpretation towards ACL injury mechanics. Such variability may be inherent to the dynamic nature of the side-cutting task or experimental issues not yet known.

Item Type: Article
Additional Information: NOTICE: this is the author’s version of a work that was accepted for publication in Gait and Posture. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Gait and Posture, 41(4), May 2015 DOI: 10.1016/j.gaitpost.2015.03.014
Uncontrolled Keywords: 1103 Clinical Sciences, 1106 Human Movement And Sports Science, 0913 Mechanical Engineering
Subjects: R Medicine > RC Internal medicine > RC1200 Sports Medicine
Divisions: Sport & Exercise Sciences
Publisher: Elsevier
Related URLs:
Date Deposited: 30 Apr 2015 14:26
Last Modified: 07 Sep 2017 04:08
DOI or Identification number: 10.1016/j.gaitpost.2015.03.014
URI: http://researchonline.ljmu.ac.uk/id/eprint/967

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