P15 Chronic ankle instability and evertors’ insufficiency: better assess impaired control in weight bearing or weakness in open kinetic chain?

2017 ◽  
Author(s):  
F Fourchet ◽  
R Terrier ◽  
B Gojanovic ◽  
N Forestier
Keyword(s):  
Ankle Instability ◽  
Weight Bearing ◽  
Chronic Ankle Instability ◽  
Kinetic Chain ◽  
Impaired Control ◽  
Open Kinetic Chain

The Effect of 2 Forms of Talocrural Joint Traction on Dorsiflexion Range of Motion and Postural Control in Those With Chronic Ankle Instability

2017 ◽  
Vol 26 (3) ◽  
pp. 239-244 ◽  
Author(s):  
Cameron J. Powden ◽  
Kathleen K. Hogan ◽  
Erik A. Wikstrom ◽  
Matthew C. Hoch
Keyword(s):  
Postural Control ◽  
Range Of Motion ◽  
Outcome Measures ◽  
Ankle Instability ◽  
Weight Bearing ◽  
Chronic Ankle Instability ◽  
Physical Contact ◽  
Future Research ◽  
Talocrural Joint ◽  
Sham Condition

Context:Talocrural joint mobilizations are commonly used to address deficits associated with chronic ankle instability (CAI).Objective:Examine the immediate effects of talocrural joint traction in those with CAI.Design:Blinded, crossover.Setting:Laboratory.Participants:Twenty adults (14 females; age = 23.80 ± 4.02 y; height = 169.55 ± 12.38 cm; weight = 78.34 ± 16.32 kg) with self-reported CAI participated. Inclusion criteria consisted of a history of ≥1 ankle sprain, ≥2 episodes of giving way in the previous 3 mo, answering “yes” to ≥4 questions on the Ankle Instability Instrument, and ≤24 on the Cumberland Ankle Instability Tool.Intervention:Subjects participated in 3 sessions in which they received a single treatment session of sustained traction (ST), oscillatory traction (OT), or a sham condition in a randomized order. Interventions consisted of four 30-s sets of traction with 1 min of rest between sets. During ST and OT, the talus was distracted distally from the ankle mortise to the end-range of accessory motion. ST consisted of continuous distraction and OT involved 1-s oscillations between the mid and end-range of accessory motion. The sham condition consisted of physical contact without force application. Preintervention and postintervention measurements of weight-bearing dorsiflexion, dynamic balance, and static single-limb balance were collected.Main Outcome Measures:The independent variable was treatment (ST, OT, sham). The dependent variables included pre-to-posttreatment change scores for the WBLT (cm), normalized SEBTAR (%), and time-to-boundary (TTB) variables(s). Separate 1-way ANOVAs examined differences between treatments for each dependent variable. Alpha was set a priori at P < .05.Results:No significant treatment effects were identified for any variables.Conclusion:A single intervention of ST or OT did not produce significant changes in weight-bearing dorsiflexion range of motion or postural control in individuals with CAI. Future research should investigate the effects of repeated talocrural traction treatments and the effects of this technique when combined with other manual therapies.

Is chronic ankle instability associated with impaired muscle strength? Ankle, knee and hip muscle strength in individuals with chronic ankle instability: a systematic review with meta-analysis

2020 ◽  
Vol 54 (14) ◽  
pp. 839-847 ◽  
Author(s):  
Nafiseh Khalaj ◽  
Bill Vicenzino ◽  
Luke James Heales ◽  
Michelle D Smith
Keyword(s):  
Systematic Review ◽  
Muscle Strength ◽  
Lower Limb ◽  
Ankle Instability ◽  
Meta Analysis ◽  
Sample Size Calculation ◽  
Chronic Ankle Instability ◽  
Lower Limb Muscle ◽  
Limb Muscle ◽  
Kinetic Chain

ObjectiveDetermine whether impairments in lower limb muscle strength exist in individuals with chronic ankle instability (CAI) compared with uninjured controls.DesignSystematic review with meta-analysis.Data sourceA comprehensive search of PubMed, Cochrane, CINAHL, Web of Science and EMBASE electronic databases from inception to 10 February 2019.Eligibility criteria for selecting studiesCross-sectional and case–control studies were included if they objectively measured lower limb muscle strength in individuals with CAI compared with controls. Risk of bias and quality of included studies were assessed. Data of included studies were extracted, and meta-analysis was conducted where appropriate.Results12 397 unique studies were identified, of which 20 were included and 16 were eligible for meta-analysis. Reviewed studies clearly described the aim/hypothesis and main outcome measure, but most lacked sample size calculation and assessor blinding. Meta-analyses showed individuals with CAI had lower eccentric and concentric evertor strength (30 and 120°/s; Nm; standardised mean difference (SMD) between −0.73 and −0.95), eccentric invertor strength (60 and 120°/s; both Nm and Nm/kg; SMD between −0.61 and −1.37), concentric invertor strength (60 and 120°/s; Nm; SMD=−0.7) and concentric knee extensor strength (SMD=−0.64) compared with control participants. Ankle eccentric dorsiflexor strength was not different between groups. Although pooling was not possible, data from three separate studies indicated that hip flexor, abductor and external rotator strength, but not hip adductor and extensor strength, was lower in individuals with CAI than in control participants.ConclusionIndividuals with CAI have ankle inversion and eversion strength deficits. Our data also point to differences between individuals with CAI and controls in hip and knee strength. These elements of the kinetic chain should be evaluated by clinicians who rehabilitate individuals with CAI.PROSPERO registration numberCRD42016037759.

Effect of weight-bearing overload using elastic tubing on balance and functional performance in athletes with chronic ankle instability

2018 ◽  
Vol 33 (5) ◽  
pp. e229-e236
Author(s):  
G.R. Melam ◽  
A.A. Alhusaini ◽  
V. Perumal ◽  
S. Buragadda ◽  
A. Albarrati ◽  
...  
Keyword(s):  
Functional Performance ◽  
Ankle Instability ◽  
Weight Bearing ◽  
Chronic Ankle Instability

scholarly journals Predicting Manual Therapy Treatment Success in Patients With Chronic Ankle Instability: Improving Self-Reported Function

2017 ◽  
Vol 52 (4) ◽  
pp. 325-331 ◽  
Author(s):  
Erik A. Wikstrom ◽  
Patrick O. McKeon
Keyword(s):  
Ankle Instability ◽  
Weight Bearing ◽  
Treatment Success ◽  
Chronic Ankle Instability ◽  
Response Analysis ◽  
Controlled Clinical Trial ◽  
Foot And Ankle ◽  
Minimally Clinically Important Difference ◽  
Medicine Research ◽  
Ability Measure

Context:  Therapeutic modalities that stimulate sensory receptors around the foot-ankle complex improve chronic ankle instability (CAI)–associated impairments. However, not all patients have equal responses to these modalities. Identifying predictors of treatment success could improve clinician efficiency when treating patients with CAI. Objective:  To conduct a response analysis on existing data to identify predictors of improved self-reported function in patients with CAI. Design:  Secondary analysis of a randomized controlled clinical trial. Setting:  Sports medicine research laboratories. Patients or Other Participants:  Fifty-nine patients with CAI, which was defined in accordance with the International Ankle Consortium recommendations. Intervention(s):  Participants were randomized into 3 treatment groups (plantar massage [PM], ankle-joint mobilization [AJM], or calf stretching [CS]) that received six 5-minute treatments over 2 weeks. Main Outcome Measure(s):  Treatment success, defined as a patient exceeding the minimally clinically important difference of the Foot and Ankle Ability Measure–Sport (FAAM–S). Results:  Patients with ≤5 recurrent sprains and ≤82.73% on the Foot and Ankle Ability Measure had a 98% probability of having a meaningful FAAM–S improvement after AJM. As well, ≥5 balance errors demonstrated 98% probability of meaningful FAAM–S improvements from AJM. Patients &lt;22 years old and with ≤9.9 cm of dorsiflexion had a 99% probability of a meaningful FAAM–S improvement after PM. Also, those who made ≥2 single-limb–stance errors had a 98% probability of a meaningful FAAM–S improvement from PM. Patients with ≤53.1% on the FAAM–S had an 83% probability of a meaningful FAAM–S improvement after CS. Conclusions:  Each sensory-targeted ankle-rehabilitation strategy resulted in a unique combination of predictors of success for patients with CAI. Specific indicators of success with AJM were deficits in self-reported function, single-limb balance, and &lt;5 previous sprains. Age, weight-bearing–dorsiflexion restrictions, and single-limb balance deficits identified patients with CAI who will respond well to PM. Assessing self-reported sport-related function can identify CAI patients who will respond positively to CS.

The Effects of a Semi-Rigid Brace or Taping on Talocrural and Subtalar Kinematics in Chronic Ankle Instability

2014 ◽  
Vol 7 (6) ◽  
pp. 471-477 ◽  
Author(s):  
Takumi Kobayashi ◽  
Masayuki Saka ◽  
Eiichi Suzuki ◽  
Naohito Yamazaki ◽  
Makoto Suzukawa ◽  
...  
Keyword(s):  
Internal Rotation ◽  
Ankle Instability ◽  
Plantar Flexion ◽  
Weight Bearing ◽  
Case Series ◽  
Chronic Ankle Instability ◽  
Cross Sectional ◽  
Anterior Translation ◽  
Computed Tomography Images ◽  
Significant Difference

Background. A semi-rigid brace or taping is often used to prevent giving-ways in the joint with chronic ankle instability (CAI). However, it remains unknown whether the application of a semi-rigid brace or taping modifies abnormal kinematics in CAI joints. The objective of this study was to determine if the application of a semi-rigid brace or taping of the ankle normalizes abnormal weight-bearing kinematics in CAI joints during ankle internal rotation in plantar flexion. Methods. A total of 14 male patients with unilateral CAI (mean age 21.1 ± 2.5 years) were enrolled. Three-dimensional bone models created from the computed tomography images were matched to the fluoroscopic images to compute the 6 degrees-of-freedom talocrural, subtalar, and ankle joint complex (AJC) kinematics for the healthy and contralateral CAI joints, as well as for CAI joints with a brace or taping. Selected outcome measures were talocrural anterior translation, talocrural internal rotation, and subtalar internal rotation. Results. There was no significant difference in talocrural anterior translation and internal rotation induced by applying either a semi-rigid brace or taping ( P > .05). For subtalar internal rotation, there was a tendency toward restoration of normal kinematics in CAI joints after applying a semi-rigid brace or taping. However, the difference was not significant ( P > .05). Discussion. Application of a semi-rigid brace or taping had limited effects on the CAI joint during weight-bearing ankle internal rotation in plantar flexion. Further studies using a variety of testing conditions should be conducted in the future. Levels of Evidence: Therapeutic, Level IV: Cross-Sectional Case Series

Functional Rehabilitation Interventions for Chronic Ankle Instability: A Systematic Review

2010 ◽  
Vol 19 (1) ◽  
pp. 98-114 ◽  
Author(s):  
Kathryn A. Webster ◽  
Phillip A. Gribble
Keyword(s):  
Postural Control ◽  
Ankle Instability ◽  
Evidence Synthesis ◽  
Chronic Ankle Instability ◽  
Assessment Tools ◽  
Effect Sizes ◽  
Quiet Standing ◽  
Inclusion Criteria ◽  
Kinetic Chain ◽  
Functional Rehabilitation

Context:Functional rehabilitation is often employed for ankle instability, but there is little evidence to support its efficacy, especially in those with chronic ankle instability (CAI).Objective:To review studies using both functional rehabilitation interventions and functional measurements to establish the effectiveness of functional rehabilitation for both postural control and self-reported outcomes in those with CAI.Evidence Acquisition:The databases of Medline, SPORTDiscus, and PubMed were searched between the years 1988 and 2008. Inclusion criteria required articles to have used a clinical research trial involving at least 1 functional rehabilitation intervention, have at least 1 outcome measure of function and/or functional performance, and to have used at least 1 group of subjects who reported either repeated lateral ankle sprains or episodes of “giving way.” The term functional was operationally defined as dynamic, closed-kinetic-chain activity other than quiet standing.Evidence Synthesis:Six articles met the inclusion criteria. The articles reviewed used multiple functional means for assessment and training, with a wobble board or similar device being the most common. Despite effect sizes being inconsistent for measures of dynamic postural control, all interventions resulted in improvements. Significant improvements and strong effect sizes were demonstrated for self-reported outcomes.Conclusions:The reviewed studies using functional rehabilitation interventions and functional assessment tools were associated with improved ankle stability for both postural control and self-reported function, but more studies may be needed with more consistent effect sizes and confidence intervals to make a definitive conclusion.

Kinetic Chain Exercise: Implications for the Anterior Cruciate Ligament Patient

1997 ◽  
Vol 6 (2) ◽  
pp. 125-143 ◽  
Author(s):  
Kevin E. Wilk ◽  
Naiquan Zheng ◽  
Glenn S. Fleisig ◽  
James R. Andrews ◽  
William G. Clancy
Keyword(s):  
Muscle Activity ◽  
Cruciate Ligament ◽  
Weight Bearing ◽  
Rehabilitation Program ◽  
Hamstring Muscle ◽  
Kinetic Chain ◽  
Bearing Load ◽  
Open Kinetic Chain ◽  
Closed Kinetic Chain ◽  
Anterior Cruciate

Closed kinetic chain exercise has become popular in rehabilitation of the ACL patient. While many clinicians agree on the benefits of closed kinetic chain exercise, there is great discrepancy as to which exercises fit this category. This discrepancy stems from the fact that the kinetic chain concept was originally developed using mechanical engineering concepts and not human kinesiology. In this paper, the kinetic chain concept is redefined in a continuum of lower extremity exercises from closed kinetic chain to open kinetic chain. The placement of an exercise in this continuum is based upon joint kinematics, quadriceps and hamstring muscle activity, cruciate ligament stress, and joint weight-bearing load. An understanding of these factors can help the clinician design a comprehensive and effective rehabilitation program for the ACL patient.

scholarly journals Weight-Bearing Dorsiflexion Range of Motion and Landing Biomechanics in Individuals With Chronic Ankle Instability

2015 ◽  
Vol 50 (8) ◽  
pp. 833-839 ◽  
Author(s):  
Matthew C. Hoch ◽  
Kelley E. Farwell ◽  
Stacey L. Gaven ◽  
Joshua T. Weinhandl
Keyword(s):  
Range Of Motion ◽  
Sagittal Plane ◽  
Ankle Instability ◽  
Weight Bearing ◽  
Chronic Ankle Instability ◽  
Coefficient Of Determination ◽  
Initial Contact ◽  
Landing Biomechanics ◽  
Maximum Angle ◽  
The Relationship

Context  People with chronic ankle instability (CAI) exhibit less weight-bearing dorsiflexion range of motion (ROM) and less knee flexion during landing than people with stable ankles. Examining the relationship between dorsiflexion ROM and landing biomechanics may identify a modifiable factor associated with altered kinematics and kinetics during landing tasks. Objective  To examine the relationship between weight-bearing dorsiflexion ROM and single-legged landing biomechanics in persons with CAI. Design  Cross-sectional study. Setting  Laboratory. Patients or Other Participants  Fifteen physically active persons with CAI (5 men, 10 women; age = 21.9 ± 2.1 years, height = 168.7 ± 9.0 cm, mass = 69.4 ± 13.3 kg) participated. Intervention(s)  Participants performed dorsiflexion ROM and single-legged landings from a 40-cm height. Sagittal-plane kinematics of the lower extremity and ground reaction forces (GRFs) were captured during landing. Main Outcome Measure(s)  Static dorsiflexion was measured using the weight-bearing–lunge test. Kinematics of the ankle, knee, and hip were observed at initial contact, maximum angle, and sagittal displacement. Sagittal displacements of the ankle, knee, and hip were summed to examine overall sagittal displacement. Kinetic variables were maximum posterior and vertical GRFs normalized to body weight. We used Pearson product moment correlations to evaluate the relationships between dorsiflexion ROM and landing biomechanics. Correlations (r) were interpreted as weak (0.00–0.40), moderate (0.41–0.69), or strong (0.70–1.00). The coefficient of determination (r2) was used to determine the amount of explained variance among variables. Results  Static dorsiflexion ROM was moderately correlated with maximum dorsiflexion (r = 0.49, r2 = 0.24), ankle displacement (r = 0.47, r2 = 0.22), and total displacement (r = 0.67, r2 = 0.45) during landing. Dorsiflexion ROM measured statically and during landing demonstrated moderate to strong correlations with maximum knee (r = 0.69–0.74, r2 = 0.47–0.55) and hip (r = 0.50–0.64, r2 = 0.25–0.40) flexion, hip (r = 0.53–0.55, r2 = 0.28–0.30) and knee (r = 0.53–0.70, r2 = 0.28–0.49) displacement, and vertical GRF (−0.47– −0.50, r2 = 0.22–0.25). Conclusions  Dorsiflexion ROM was moderately to strongly related to sagittal-plane kinematics and maximum vertical GRF during single-legged landing in persons with CAI. Persons with less dorsiflexion ROM demonstrated a more erect landing posture and greater GRF.

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