Relationship between hip flexion and ankle dorsiflexion during swing phase in chronic stroke patients

Roche, Nicolás; Bonnyaud, Céline; Geiger, Maxime; Bussel, B.; Bensmaïl, Djamel

doi:10.1016/j.clinbiomech.2015.02.001

Cited by 31 publications

(41 citation statements)

References 33 publications

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“…Figure 1 illustrates the gait assistance for foot drop patient using AFO. The reduction of dorsiflexion (e.g., blue circle) resulted in unwanted plantarflexion, which may lead to abnormal gait [4] toe-drags when walking [5]. The patient should avoid toe-dragging, as this disturbs walking stability and increases the probability of a fall [6].…”

Section: Introductionmentioning

confidence: 99%

Control Reference Parameter for Stance Assistance Using a Passive Controlled Ankle Foot Orthosis—A Preliminary Study

et al. 2019

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This paper aims to present a preliminary study of control reference parameters for stance assistance among different subjects and walking speeds using a passive-controlled ankle foot orthosis. Four young male able-bodied subjects with varying body mass indexes (23.842 ± 4.827) walked in three walking speeds of 1, 3, and 5 km/h. Two control references, average ankle torque (aMa), and ankle angular velocity (aω), which can be implemented using a magnetorheological brake, were measured. Regression analysis was conducted to identify suitable control references in the three different phases of the stance. The results showed that aω has greater correlation (p) with body mass index and walking speed compared to aMa in the whole stance phase (p1(aω) = 0.666 > p1(aMa) = 0.560, p2(aω) = 0.837 > p2(aMa) = 0.277, and p3(aω) = 0.839 > p3(aMa) = 0.369). The estimation standard error (Se) of the aMa was found to be generally higher than of aω (Se1(aMa) = 2.251 > Se1(aω) = 0.786, Se2(aMa) = 1.236 > Se2(aω) = 0.231, Se3(aMa) = 0.696 < Se3(aω) = 0.755). Future studies should perform aω estimation based on body mass index and walking speed, as suggested by the higher correlation and lower standard error as compared to aMa. The number of subjects and walking speed scenarios should also be increased to reduce the standard error of control reference parameters estimation.

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Section: Introductionmentioning

confidence: 99%

Control Reference Parameter for Stance Assistance Using a Passive Controlled Ankle Foot Orthosis—A Preliminary Study

et al. 2019

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“…It was based on two assumptions. Firstly, the primary abnormalities are the ones impacting foot clearance (as well as spatio-temporal parameters [3]) and thus Table 1. Discriminatory criteria of the proposed classification.…”

Section: Classificationmentioning

confidence: 99%

Proposition of a classification of adult patients with hemiparesis in chronic phase

Chantraine¹

2017

Annals of Physical and Rehabilitation Medicine

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“…Various compensatory movement strategies to ensure sufficient foot-clearance after stroke are reported, 10 including pelvic hiking 9,71 or pelvic obliquity, 72 both in the frontal plane, and circumduction. 9,71 Furthermore, increased hip flexion 70 and a hip abductor pattern 73 are reported. However, kinematic strategies to achieve sufficient foot-clearance are reported to differ between subjects 70,71,73 and are thought to be linked with self-selected walking speed.…”

Section: Introductionmentioning

confidence: 97%

“…9,71 Furthermore, increased hip flexion 70 and a hip abductor pattern 73 are reported. However, kinematic strategies to achieve sufficient foot-clearance are reported to differ between subjects 70,71,73 and are thought to be linked with self-selected walking speed. 71 Ankle-foot orthoses (AFOs) are often prescribed to improve walking.…”

Section: Introductionmentioning

confidence: 97%

“…Initial walking function is limited in two-thirds of patients with acute stroke 5 and regaining this walking ability is an important goal in rehabilitation. 68 Important kinematic changes observed after stroke are decreased ankle dorsiflexion 7,8,69,70 and decreased knee [7][8][9] and hip flexion 10 in swing, contributing to insufficient foot-clearance. Various compensatory movement strategies to ensure sufficient foot-clearance after stroke are reported, 10 including pelvic hiking 9,71 or pelvic obliquity, 72 both in the frontal plane, and circumduction.…”

Section: Introductionmentioning

confidence: 99%

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The sooner the better?! Providing ankle-foot orthoses in the rehabilitation after stroke

Nikamp-Simons¹

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Objective 1) To study the effects of providing ankle-foot orthoses (AFOs) in subjects with (sub)acute stroke; and 2) to study whether the point in time at which an AFO is provided post-stroke (early or delayed), influences these effects. Design Randomized controlled trial. Setting Rehabilitation centre. Subjects Unilateral hemiparetic stroke subjects with indication for use of an AFO and maximal six weeks post-stroke. Interventions Subjects were randomly assigned to: early provision (at inclusion; week 1) or delayed provision (eight weeks later; week 9). Outcome measures 10-meter walk test, 6-minute walk test, Timed Up and Go Test, stairs test, Functional Ambulation Categories, Berg Balance Scale, Rivermead Mobility Index and Barthel Index; assessed in week 1, 3, 9 and 11. Results A total of 33 subjects were randomized (16 early, 17 delayed). Positive effects of AFOs were found two weeks after provision, both when provided early (significant effects on all outcomes) or delayed (Berg Balance Scale p =0.011, Functional Ambulation Categories p =0.008, 6-minute walk test p =0.005, Timed Up and Go Test p =0.028). Comparing effects after early and delayed provision showed that early provision resulted in increased levels of improvement on Berg Balance Scale (+5.1 points, p =0.002), Barthel Index (+1.9 points, p =0.002) and non-significant improvements on 10-Meter walk test (+0.14m/s, p =0.093) and Timed Up and Go Test (-5.4 sec, p =0.087), compared to delayed provision. Conclusions We found positive effects of providing AFOs in (sub)acute stroke subjects that had not used these orthoses before.

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Relationship between hip flexion and ankle dorsiflexion during swing phase in chronic stroke patients

Cited by 31 publications

References 33 publications

Control Reference Parameter for Stance Assistance Using a Passive Controlled Ankle Foot Orthosis—A Preliminary Study

Control Reference Parameter for Stance Assistance Using a Passive Controlled Ankle Foot Orthosis—A Preliminary Study

Proposition of a classification of adult patients with hemiparesis in chronic phase

The sooner the better?! Providing ankle-foot orthoses in the rehabilitation after stroke

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