Quantitative Assessment of Mechanical Laxity in the Functionally Unstable Ankle

Hubbard, Tricia J.; Kaminski, Thomas W.; Griend, Robert A. Vander; Kovaleski, John E.

doi:10.1249/01.mss.0000126604.85429.29

Cited by 112 publications

(130 citation statements)

References 23 publications

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“…5,6 Two potential contributing factors to CAI are mechanical ankle instability (MAI), which is the physiologic laxity of the lateral ankle ligaments after a sprain, and functional ankle instability (FAI), which refers to episodes of instability linked to possible deficits in proprioception or neuromuscular control, not physiologic ligamentous laxity. 4 Despite potential differences in the nature of MAI and FAI, few authors to date have separated or differentiated between the two, 7 although these differences may play a role in the development of CAI. 8 A number of researchers have reported conflicting results regarding differences in proximal kinematics and landing kinetics between participants with and without CAI.…”

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confidence: 99%

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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confidence: 99%

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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“…Changes in joint motion have been found to be associated with chronic ankle sprains. Increased anterior joint laxity [78], reduction in posterior talar glide [15], and deficits in dorsiflexion range of motion [64] have all been identified in this population. These changes in joint motion may alter the function of the joint.…”

Section: Rehabilitationmentioning

confidence: 91%

Current concepts on the pathophysiology and management of recurrent ankle sprains and chronic ankle instability

Herb

Hertel

2014

Curr Phys Med Rehabil Rep

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Lateral ankle sprains occur more than any other musculoskeletal injury in an athletic population. The greatest risk for an inversion ankle sprain is a history of a previous sprain. Recurring instability associated with subjective complaints of giving way is often termed chronic ankle instability (CAI). CAI has been associated with altered postural control, sensorimotor deficits, reduced physical activity, functional limitations, and long-term degeneration of the joint. Alterations, including muscle activity and changes in the kinematics of the lower extremity may predispose this population to continued instability at the joint and long term health issues. Common treatments include using external support, therapeutic modalities, and directed rehabilitation. Wearing ankle braces and performing balance training has been shown to reduce the risk of recurrent ankle sprains. Directed rehabilitation may improve function in patients with CAI. By identifying and minimizing dysfunction following ankle sprains, clinicians may improve the short-term and longterm function of this population.

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“…A instabilidade crônica do tornozelo pode existir após um ou mais entorses, sendo definida como a tendência do tornozelo a sofrer falseios 11 . Como a presença de instabilidade é verificada por meio das queixas apresentadas pelo indivíduo, tem caráter subjetivo, sendo as queixas presentes durante a prática de atividade física e/ou durante a execução de outras atividades diárias [12][13][14][15][16] . Embora as instabilidades articulares sejam verificadas por sintomas de dimensões subjetivas e com graus diferentes, a presença do falseio continua sendo o principal critério para a sua definição 17 .…”

Section: Introductionunclassified

Instrumentos de avaliação para limitações funcionais associadas à instabilidade crônica de tornozelo: uma revisão sistemática da literatura

Suda

Coelho²

2012

Fisioter. Pesqui.

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A instabilidade de tornozelo é definida como a sua tendência para sofrer falseios e entorses de repetição após a ocorrência de entorse lateral. Como a presença de instabilidade é definida por meio das queixas relatadas pelo indivíduo, apresenta caráter subjetivo, sendo importante identificar o melhor instrumento de avaliação para a determinação de sua presença e/ou gravidade. O objetivo deste estudo foi revisar, de forma sistemática, instrumentos de avaliação concebidos para pacientes com instabilidade crônica de tornozelo. Foram realizadas pesquisas bibliográficas nas bases de dados PubMed, Embase, BVS, LILACS e SciELO para identificar os instrumentos elegíveis. No total, seis estudos foram incluídos e apresentaram cinco instrumentos diferentes - Foot and Ankle Disability Index (FADI), Ankle Joint Functional Assessment Tool (AJFAT), Foot and Ankle Ability Measure (FAAM), Ankle Joint Functional Assessment Tool (AII) e Cumberland Ankle Instability Tool (CAIT). Foram encontrados instrumentos com qualidade que detectam limitações funcionais em indivíduos com instabilidade crônica de tornozelo, não sendo instrumentos válidos para diagnóstico de instabilidade. O CAIT mostrou-se a ferramenta mais completa, mas não foi validada em uma população específica de indivíduos com condição de instabilidade do tornozelo. Observa-se a necessidade de mais estudos clinimétricamente válidos a fim de atestar a sua validade para se obter uma ferramenta eficaz e completa da instabilidade funcional do tornozelo.

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Quantitative Assessment of Mechanical Laxity in the Functionally Unstable Ankle

Cited by 112 publications

References 23 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

Current concepts on the pathophysiology and management of recurrent ankle sprains and chronic ankle instability

Instrumentos de avaliação para limitações funcionais associadas à instabilidade crônica de tornozelo: uma revisão sistemática da literatura

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