Gait evaluation of new powered knee–ankle–foot orthosis in able-bodied persons

Arazpour, Mokhtar; Ahmadi, Fardin; Bani, Monireh Ahmadi; Hutchins, Stephen W; Bahramizadeh, Mahmood; Ghomshe, Farhad Tabatabai; Kashani, Reza Vahab

doi:10.1177/0309364613486917

Cited by 18 publications

(32 citation statements)

References 17 publications

(45 reference statements)

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“…Typical walking speed has been reported to be 130 cm/s during normal walking in healthy adult subjects [37]. Interestingly, 17 studies evaluate gait speed with advancing age in the elderly subjects.…”

Section: Speed Of Walkingmentioning

confidence: 99%

The effect of aging on gait parameters in able-bodied older subjects: a literature review

et al. 2015

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Section: Speed Of Walkingmentioning

confidence: 99%

The effect of aging on gait parameters in able-bodied older subjects: a literature review

et al. 2015

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“…The feasibility of this new powered KAFO design has previously been evaluated on healthy subjects and a single subject with poliomyelitis. 17,18…”

Section: Introductionmentioning

confidence: 99%

Evaluation of gait symmetry in poliomyelitis subjects

Arazpour

Ahmadi

Bahramizadeh

et al. 2016

Prosthetics &Amp; Orthotics International

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Background: Compared to able-bodied subjects, subjects with post-polio syndrome and poliomyelitis demonstrate a preference for weight-bearing on the non-paretic limb, causing gait asymmetry. Objectives: The purpose of this study was to evaluate the gait symmetry of the poliomyelitis subjects when ambulating with either a drop-locked knee–ankle–foot orthosis or a newly developed powered knee–ankle–foot orthosis. Study design: Quasi experimental study. Methods: Seven subjects with poliomyelitis who routinely wore conventional knee–ankle–foot orthoses participated in this study and received training to enable them to ambulate with the powered knee–ankle–foot orthosis on level ground, prior to gait analysis. Results: There were no significant differences in the gait symmetry index of step length ( p = 0.085), stance time ( p = 0.082), double-limb support time ( p = 0.929), or speed of walking ( p = 0.325) between the two test conditions. However, using the new powered knee–ankle–foot orthosis improved the symmetry index in step width ( p = 0.037), swing time ( p = 0.014), stance phase percentage ( p = 0.008), and knee flexion during swing phase ( p ⩽ 0.001) compared to wearing the drop-locked knee–ankle–foot orthosis. Conclusion: The use of a powered knee–ankle–foot orthosis for ambulation by poliomyelitis subjects affects gait symmetry in the base of support, swing time, stance phase percentage, and knee flexion during swing phase. Clinical relevance A new powered knee–ankle–foot orthosis can improve gait symmetry for poliomyelitis subjects by influencing step width, swing time, stance time percentage, and knee flexion during swing phase when compared to ambulating with a drop-locked knee–ankle–foot orthosis.

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“…24 Another type of mechanical orthosis is MLO as the third mechanism of the hip joint system. There are variations of this type of orthosis, which include the Walkabout, 25 Orthoses factors in improvement of walking in SCI patients M Arazpour et al Bernardi et al 13 Clinical trial Ten paraplegic patients with thoracic levels from T4 to T12 seven normal subjects (control group) Orthoses factors in improvement of walking in SCI patients M Arazpour et al Orthoses factors in improvement of walking in SCI patients M Arazpour et al Arazpour et al 37 Comparative study…”

Section: Resultsmentioning

confidence: 99%

“…Combination of these orthoses with external actuators or using mechanical stance control orthosis in this type of orthosis can refine and provide a suitable means of progression of rehabilitation and technology this field. Developments in the mechanical design, 29 hybrid orthoses 33,34 active powered knee joints, 20,32 the pneumatic artificial limb in KAFO, 35 motorized SCKAFO 36 and motorized KAFO 37 have been introduced to provide knee flexion during the swing phase of walking by SCI patients. Table 5 demonstrated studies that evaluated the modified ankle joints on gait parameters in the SCI patients.…”

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The influence of orthosis options on walking parameters in spinal cord-injured patients: a literature review

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Gait evaluation of new powered knee–ankle–foot orthosis in able-bodied persons

Abstract: The results of this study demonstrated that a powered knee-ankle-foot orthosis could lock the knee during stance and provide active knee flexion during swing to potentially reduce the tripping during ambulation.

Cited by 18 publications

References 17 publications

The effect of aging on gait parameters in able-bodied older subjects: a literature review

The effect of aging on gait parameters in able-bodied older subjects: a literature review

Evaluation of gait symmetry in poliomyelitis subjects

The influence of orthosis options on walking parameters in spinal cord-injured patients: a literature review

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