Cailbhe Doherty1, Chris Bleakley2, Jay Hertel3, Brian Caulfield4, John Ryan5, Eamonn Delahunt6. 1. School of Public Health, Physiotherapy and Population Science, University College Dublin, Ireland. Electronic address: cailbhe.doherty@ucdconnect.ie. 2. Sport and Exercise Sciences Research Institute, Ulster Sports Academy, University of Ulster, Newtownabbey, Co. Antrim, United Kingdom. 3. Department of Kinesiology, University of Virginia, United States. 4. School of Public Health, Physiotherapy and Population Science, University College Dublin, Ireland. 5. St Vincent's University Hospital, Ireland. 6. School of Public Health, Physiotherapy and Population Science, University College Dublin, Ireland; Institute for Sport and Health, University College Dublin, Ireland.
Abstract
OBJECTIVES: To compare the locomotive biomechanics of participants with chronic ankle instability (CAI) to those of lateral ankle sprain (LAS) copers. DESIGN: Cross-sectional study. METHODS: Twenty-eight participants with CAI and 42 LAS copers each performed 5 self-selected paced gait trials. 3-D lower extremity temporal kinematic and kinetic data were collected for these participants from 200ms pre- to 200ms post-heel strike (period 1) and from 200ms pre- to 200ms post-toe off (period 2). RESULTS: The CAI group displayed increased hip flexion bilaterally during period 1 compared to LAS copers. During period 2, CAI participants exhibited reduced hip extension bilaterally, increased knee flexion bilaterally and increased ankle inversion on the 'involved' limb. They also displayed a bilateral decrease in the flexor moment pattern at the knee. CONCLUSIONS: Considering that all of the features which distinguished CAI participants from LAS copers were also evident in our previously published research (within 2-weeks following acute first-time LAS); these findings establish a potential link between these features and long-term outcome following first-time LAS. Clinicians must be cognizant of the capacity for these movement and motor control impairments to cascade proximally from the injured joint up the kinetic chain and recognise the value that gait re-training may have in rehabilitation planning to prevent CAI.
OBJECTIVES: To compare the locomotive biomechanics of participants with chronic ankle instability (CAI) to those of lateral ankle sprain (LAS) copers. DESIGN: Cross-sectional study. METHODS: Twenty-eight participants with CAI and 42 LAS copers each performed 5 self-selected paced gait trials. 3-D lower extremity temporal kinematic and kinetic data were collected for these participants from 200ms pre- to 200ms post-heel strike (period 1) and from 200ms pre- to 200ms post-toe off (period 2). RESULTS: The CAI group displayed increased hip flexion bilaterally during period 1 compared to LAS copers. During period 2, CAI participants exhibited reduced hip extension bilaterally, increased knee flexion bilaterally and increased ankle inversion on the 'involved' limb. They also displayed a bilateral decrease in the flexor moment pattern at the knee. CONCLUSIONS: Considering that all of the features which distinguished CAI participants from LAS copers were also evident in our previously published research (within 2-weeks following acute first-time LAS); these findings establish a potential link between these features and long-term outcome following first-time LAS. Clinicians must be cognizant of the capacity for these movement and motor control impairments to cascade proximally from the injured joint up the kinetic chain and recognise the value that gait re-training may have in rehabilitation planning to prevent CAI.
Authors: Masafumi Terada; Kyle B Kosik; Ryan S McCann; Colin Drinkard; Phillip A Gribble Journal: J Sport Health Sci Date: 2020-08-28 Impact factor: 7.179