Biomechanical evaluation of different ankle orthoses in a simulated lateral ankle sprain in two different modes

Benca, Emir; Ziai, Pejman; Hirtler, Lena; Schuh, Reinhard; Zandieh, Shahin; Windhager, Reinhard

doi:10.1111/sms.13455

Cited by 3 publications

(2 citation statements)

References 31 publications

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“…Research indicates that the recurrence rate of ankle sprains can be as high as 70%. [27] Therefore, reducing the risk of recurrent ankle sprains is crucial for patients. Lower limb kinetic chain exercises can enhance the strength of hip adductor muscles and ankle inversion muscle groups during dynamic training, improve the e ciency of lower limb muscle force transmission, increase the muscle strength and coordination of joints such as the hip and knee, improve ankle stability, and prevent excessive inversion movement of the ankle joint, thereby reducing the incidence of ankle inversion sprains.…”

Section: Discussionmentioning

confidence: 99%

Effects of low-level laser therapy and functional exercises in the treatment of chronic ankle sprain: A randomized controlled trial

Chen,

Fan,

Lin

et al. 2023

Preprint

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Objective: The purpose of this study is to investigate whether low-level laser therapy (LLLT) combined with functional exercise could be more effective than functional exercise alone in treating chronic ankle sprain. At the same time, to observe the dose-response relationship of LLLT in treating chronic ankle sprains. Methods: Thirty-three patients with chronic ankle sprains were randomly divided into three groups: exercise alone, low-dose laser plus exercise, and high-dose laser plus exercise, with eleven patients in each group. Two “laser groups” received laser irradiation at an intensity of 398 mW/cm2 and 796 mW/cm2 (doses of 119 J/cm2 and 239 J/cm2), respectively, which were applied to two acupoints of Ki 3 (Taixi) and Bl 60 (Kunlun), and two pain points of the ankle. The functional exercise program consisted of ankle resistance exercises, resistance kinematic chain exercises, heel raise exercises, and BOSU ball exercises. All patients received five treatments per week for four weeks. At the end of this treatment and at baseline, observing the changes in ankle pain, range of motion (ROM), muscle strength, and balance postural control, and evaluating the curative effects. Results: After the 4-week intervention, all of the groups showed significant improvement in outcomes (P<0.05). High-dose laser irradiation combined with functional exercise resulted in more significant improvements in the primary outcomes than the other two regimens (P<0.05). However, there were no significant differences (P>0.05) between low-dose laser irradiation combined with functional exercise and functional exercise alone. Conclusion: 1) Systematic functional exercise can significantly reduces the pain of patients with chronic ankle sprains, meanwhile improves the ROM, muscle strength, and balance control of the ankle joint. 2) LLLT increases the efficacy of functional exercise in the treatment of chronic ankle sprains. 3) The therapeutic effect of LLLT on chronic ankle sprains is related to the irradiation intensity, and the effects of 796mW/cm2 irradiation is better than 398mW/cm2 irradiation.

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Section: Discussionmentioning

confidence: 99%

Effects of low-level laser therapy and functional exercises in the treatment of chronic ankle sprain: A randomized controlled trial

Chen,

Fan,

Lin

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…These effects are accompanied by functional adaptations, e.g., the preparatory muscle activation, which is increased when wearing an external support [ 6 , 8 ]. Due to this interaction leading to a combined neuromechanical effect, it is still subject to debate whether the amount of stabilization provided by ankle braces under load exceeds the effect of the active, neuromuscular stabilization [ 9 , 10 ]. A measurement of the isolated mechanical deficit and its potential improvement by an ankle brace will help to estimate the effect of this common treatment.…”

Section: Introductionmentioning

confidence: 99%

Efficacy of a semirigid ankle brace in reducing mechanical ankle instability evaluated by 3D stress-MRI

et al. 2021

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Background Novel imaging technologies like 3D stress-MRI of the ankle allow a quantification of the mechanical instability contributing to chronic ankle instability. In the present study, we have tested the efficacy of a semirigid ankle brace on joint congruency in a plantarflexion/supination position with and without load. Methods In this controlled observational study of n = 25 patients suffering from mechanical ankle instability, a custom-built ankle arthrometer implementing a novel 3D-stress MRI technique was used to evaluate the stabilizing effect of an ankle brace. Three parameters of joint congruency (i.e., 3D cartilage contact area fibulotalar, tibiotalar horizontal and tibiotalar vertical) were measured. The loss of cartilage contact area from neutral position to a position combined of 40° of plantarflexion and 30° of supination without and with axial load of 200 N was calculated. A semirigid ankle brace was applied in plantarflexion/supination to evaluate its effect on joint congruence. Furthermore, the perceived stability of the brace during a hopping task was analyzed using visual analogue scale (VAS). Results The application of a semirigid brace led to an increase in cartilage contact area (CCA) when the foot was placed in plantarflexion and supination. This effect was visible for all three compartments of the upper ankle joint (P < 0.001; η2 = 0.54). The effect of axial loading did not result in significant differences. The subjective stability provided by the brace (VAS 7.6/10) did not correlate to the magnitude of the improvement of the overall joint congruency. Conclusions The stabilizing effect of the semirigid ankle brace can be verified using 3D stress-MRI. Providing better joint congruency with an ankle brace may reduce peak loads at certain areas of the talus, which possibly cause osteochondral or degenerative lesions. However, the perceived stability provided by the brace does not seem to reflect into the mechanical effect of the brace. Trial registration The study protocol was prospectively registered at the German Clinical Trials Register (#DRKS00016356).

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Influence of neoprene ankle orthoses on dynamic balance during a vertical jump in healthy individuals and with sprain history: A cross-sectional study

et al. 2023

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Biomechanical evaluation of different ankle orthoses in a simulated lateral ankle sprain in two different modes

Cited by 3 publications

References 31 publications

Effects of low-level laser therapy and functional exercises in the treatment of chronic ankle sprain: A randomized controlled trial

Effects of low-level laser therapy and functional exercises in the treatment of chronic ankle sprain: A randomized controlled trial

Efficacy of a semirigid ankle brace in reducing mechanical ankle instability evaluated by 3D stress-MRI

Influence of neoprene ankle orthoses on dynamic balance during a vertical jump in healthy individuals and with sprain history: A cross-sectional study

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