Individuals with both perceived ankle instability and mechanical laxity demonstrate dynamic postural stability deficits

Clinical Biomechanics
Cathleen N BrownKatherine Hsieh

Abstract

Chronic ankle instability is a frequent and serious consequence of lateral ankle sprains. The contribution of perceived instability and potential for mechanical laxity to contribute to the overall deficit in dynamic postural stability is unclear. The purpose was to determine if those with mechanical laxity demonstrated significant differences in dynamic postural stability compared to controls, copers and those with perceived instability. Of 93 participants, 83 recreationally active individuals were divided into 4 groups: controls, copers, those with perceived instability, and those with both perceived instability and mechanical laxity. Injury history and the Cumberland Ankle Instability Tool were collected, and an instrumented arthrometer was applied. Participants completed a single limb jump landing, balancing upon completion. Ground reaction force data were collected, scaled to body mass, and the Dynamic Postural Stability Indices were calculated for anterior-posterior, medial-lateral, vertical and composite. One-way ANOVAs with Tukey post-hoc tests (α<0.05) were conducted on each of the stability indices among the four groups. The mechanically lax group had significantly greater mean (standard deviation) medial-lateral stabi...Continue Reading

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Citations

Nov 28, 2017·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Alberto GrassiTimothy Sell
Mar 26, 2019·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Markus WenningDominic Gehring
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Aug 28, 2019·Medicine and Science in Sports and Exercise·Amelia S BruceAlan R Needle
Nov 7, 2019·Clinical Journal of Sport Medicine : Official Journal of the Canadian Academy of Sport Medicine·Adam B RosenJupil Ko
Aug 9, 2020·Journal of Orthopaedic Surgery and Research·Markus WenningJochen Paul
Apr 2, 2021·The Journal of Orthopaedic and Sports Physical Therapy·Robroy L MartinDominic Carreira

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