Variability of motion in individuals with mechanical or functional ankle instability during a stop jump maneuver

Brown, Cathleen N.; Padua, Darin A.; Marshall, Stephen W.; Guskiewicz, Kevin M.

doi:10.1016/j.clinbiomech.2009.07.001

Cited by 77 publications

(64 citation statements)

References 31 publications

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“…36 Degrees of freedom of movement at the ankle may be decreased as a strategy to improve stability. 36,37 Less ankle sagittal-plane displacement 28 and ankle movement variability 37 were reported in an MAI group during similar tasks, and more out-of-phase movement, indicating less movement stability, was noted in a CAI group during running. 38 Compensation for limited motion and variability at the ankle joint may occur with differences in hip kinematics in the sagittal plane, especially given that we observed no changes in GRF variables.…”

Section: Possible Role Of Laxitymentioning

confidence: 84%

Hip Kinematics During a Stop-Jump Task in Patients With Chronic Ankle Instability

Brown

Padua

Marshall

et al. 2011

Journal of Athletic Training

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Context: Chronic ankle instability (CAI) commonly develops after lateral ankle sprain. Movement pattern differences at proximal joints may play a role in instability.Objective: To determine whether people with mechanical ankle instability (MAI) or functional ankle instability (FAI) exhibited different hip kinematics and kinetics during a stop-jump task compared with "copers."Design: Cross-sectional study. Setting: Sports medicine research laboratory. Patients or Other Participants: Sixty-three recreational athletes, 21 (11 men, 10 women) per group, matched for sex, age, height, mass, and limb dominance. All participants reported a history of a moderate to severe ankle sprain. The participants with MAI and FAI reported 2 or more episodes of giving way at the ankle in the last year and decreased functional ability; copers did not. The MAI group demonstrated clinically positive anterior drawer and talar tilt tests, whereas the FAI group and copers did not.Intervention(s): Participants performed a maximum-speed approach run and a 2-legged stop jump followed by a maximum vertical jump. Main Outcome Measure(s):An electromagnetic tracking device synchronized with a force plate collected data during the stance phase of a 2-legged stop jump. Hip motion was measured from initial contact to takeoff into the vertical jump. Group differences in hip kinematics and kinetics were assessed.Results: The MAI group demonstrated greater hip flexion at initial contact and at maximum (P = .029 and P = .017, respectively) and greater hip external rotation at maximum (P = .035) than the coper group. The MAI group also demonstrated greater hip flexion displacement than both the FAI (P = .050) and coper groups (P = .006). No differences were noted between the FAI and coper groups in hip kinematic variables or among any of the groups in ground reaction force variables.Conclusions: The MAI group demonstrated different hip kinematics than the FAI and coper groups. Proximal joint motion may be affected by ankle joint function and laxity, and clinicians may need to assess proximal joints after repeated ankle sprains.

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Section: Possible Role Of Laxitymentioning

confidence: 84%

Hip Kinematics During a Stop-Jump Task in Patients With Chronic Ankle Instability

Brown

Padua

Marshall

et al. 2011

Journal of Athletic Training

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“…Previous authors have considered mechanical instability as an explanatory factor for lingering ankle instability, but there has not been a definitive association of ankle laxity with CAI. 6,8,15,20,23,24,28,29,47 Hertel's 20 original model differentiated mechanical instability from functional instability. More recently, Hiller et al,23 refining the model of categorizing CAI, suggested as many as 7 subgroups of individuals with CAI that would likely provide better homogeneity in describing the pathology.…”

Section: 37mentioning

confidence: 99%

Selection Criteria for Patients With Chronic Ankle Instability in Controlled Research: A Position Statement of the International Ankle Consortium

Gribble¹,

Delahunt²,

Bleakley³

et al. 2013

J Orthop Sports Phys Ther

452

459

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“…This suggests that altered sensorimotor control is a contributory factor to the recurrent LAS [4][5][6]. Furthermore, it has been demonstrated that sagittal and frontal plane rearfoot movement variability is increased during single leg landing and stop jump maneuver in cases of FAI [8,9]. This is important because consistent movement patterns are related to greater automaticity of motor control [10] and greater movement variability have already been associated with risk of musculoskeletal injury and falling (e.g., in Parkinson's, Alzheimer's and older people) [11].…”

Section: Introductionmentioning

confidence: 98%

The effect of dual tasking on foot kinematics in people with functional ankle instability

2016

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Background: Some cases of repeated inversion ankle sprains are thought to have a neurological basis and are termed functional ankle instability (FAI). In addition to factors local to the ankle, such as loss of proprioception, cognitive demands have the ability to influence motor control and may increase the risk of repetitive lateral sprains.Objective: The purpose of this study was to investigate the effect of cognitive demand on foot kinematics in physically active people with functional ankle instability.

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Variability of motion in individuals with mechanical or functional ankle instability during a stop jump maneuver

Cited by 77 publications

References 31 publications

Hip Kinematics During a Stop-Jump Task in Patients With Chronic Ankle Instability

Hip Kinematics During a Stop-Jump Task in Patients With Chronic Ankle Instability

Selection Criteria for Patients With Chronic Ankle Instability in Controlled Research: A Position Statement of the International Ankle Consortium

The effect of dual tasking on foot kinematics in people with functional ankle instability

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