| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4050249 | Clinical Biomechanics | 2015 | 4 Pages |
•Participants with an acute ankle sprain display hip-dominant strategies of postural control during a single limb stance task.•These hip-dominant strategies are evident both in the eyes open and eyes closed conditions.•These strategies were associated with significantly greater range joint movement at the hip and ankle.•Similar findings were evident in this cohort, six-months after they sustained the initial ankle sprain.•Clinicians must consider the potential persistence of postural control impairment following an initial acute ankle sprain.
BackgroundThis investigation combined measures of inter-joint coordination and stabilometry to evaluate eyes-open (condition 1) and eyes-closed (condition 2) static unilateral stance performance in a group of participants with an acute, first-time lateral ankle sprain injury in comparison to a control group.MethodsSixty-six participants with an acute first-time lateral ankle sprain and 19 non-injured controls completed three 20-second unilateral stance task trials in conditions 1 and 2. An adjusted coefficient of multiple determination statistic was used to compare stance limb 3-D kinematic data for similarity in the aim of establishing patterns of inter-joint coordination for these groups.FindingsBetween-group analyses revealed significant differences in stance limb inter-joint coordination strategies for conditions 1 and 2. Injured participants displayed increases in ankle-hip linked coordination compared to controls in condition 1 (sagittal/frontal plane: 0.12 [0.09] vs 0.06 [0.04]; η2 = .16) and condition 2 (sagittal/frontal plane: 0.18 [0.13] vs 0.08 [0.06]; η2 = 0.37).InterpretationParticipants with acute first-time lateral ankle sprain exhibit a hip-dominant coordination strategy for static unilateral stance compared to non-injured controls.
