Energy Expenditure of Walking with Prostheses

Göktepe, Ahmet Salim; Çakır, Barış; Yılmaz, Bilge; Yazıcıoğlu, Kamil

doi:10.3109/03093640903433928

Cited by 65 publications

(49 citation statements)

References 12 publications

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“…Slopes used in a treadmill test in amputees were reported by Göktepe et al 19 and Huang et al 20 In previous studies, TWTs were widely used to compare the effect of different prosthetic components on energy expenditure during ambulation. 21,22 FWT is also widely used in amputee ECW evaluation.…”

Section: Ecw Testsmentioning

confidence: 99%

A comparison between the suction suspension system and the hypobaric Iceross Seal-In® X5 in transtibial amputees

Brunelli

Delussu

Paradisi

et al. 2013

Prosthetics &Amp; Orthotics International

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Background: The two passive vacuum suspension systems currently available in total surface-bearing sockets are the hypobaric Iceross Seal-In ® and the suction suspension system. Objectives: The purpose of this study was to compare the effect of the hypobaric Iceross Seal-In ® liner with that of the suction suspension system for quality of life, pistoning, and prosthesis efficiency in unilateral transtibial amputees. Study design: Single-group repeated measures. Methods: Ten amputees were enrolled. The pistoning test, used to compare vertical movement of the stump within the socket, and the energy cost of walking test were carried out when the amputees were wearing the suction suspension system and after 2, 5, and 7 weeks of Seal-In ® X5 use. The Prosthesis Evaluation Questionnaire and the Houghton Scale Questionnaire of perceived mobility and quality of life with the prosthesis, and the Timed Up&Go Test and the Locomotor Capability Index for functional mobility were also administered at the beginning and end of the study. Results: The hypobaric Iceross Seal-In ® X5 led to significant pistoning reduction and improvement on the Houghton Scale Questionnaire and 3 of 9 domains of the Prosthesis Evaluation Questionnaire. No statistical changes were observed in functional mobility or the energy cost of walking tests. Conclusion: Replacing the suction suspension system with the hypobaric Iceross Seal-In ® X5 improves quality of life in transtibial amputees. Clinical relevanceThe main indicator of suspension system efficiency in lower-limb prostheses is pistoning in the socket. Reduced pistoning of the hypobaric Iceross Seal-In ® X5 may contribute to amputees' rehabilitation.

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Section: Ecw Testsmentioning

confidence: 99%

A comparison between the suction suspension system and the hypobaric Iceross Seal-In® X5 in transtibial amputees

Brunelli

Delussu

Paradisi

et al. 2013

Prosthetics &Amp; Orthotics International

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show abstract

“…Testing was done on the lower limb, since the work aims to address a lower-limb artificial feedback system for mobility rehabilitation applications. Specifically, participants with transfemoral amputation were targeted, since they typically face greater mobility challenges than individuals with more distal amputations [16][17]. For a person with transfemoral amputation, a prosthesis interfaces via a prosthetic socket at the thigh region of the leg, thus making this a potentially practical location for providing sensory stimulation.…”

Section: Protocolmentioning

confidence: 99%

Toward an artificial sensory feedback system for prosthetic mobility rehabilitation: Examination of sensorimotor responses

et al. 2014

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Abstract-People with lower-limb amputation have reduced mobility due to loss of sensory information, which may be restored by artificial sensory feedback systems built into prostheses. For an effective system, it is important to understand how humans sense, interpret, and respond to the feedback that would be provided. The goal of this study was to examine sensorimotor responses to mobility-relevant stimuli. Three experiments were performed to examine the effects of location of stimuli, frequency of stimuli, and means for providing the response. Stimuli, given as vibrations, were applied to the thigh region, and responses involved leg movements. Sensorimotor reaction time (RT) was measured as the duration between application of the stimulus and initiation of the response. Accuracy of response was also measured. Overall average RTs for one response option were 0.808 +/-0.142 s, and response accuracies were >90%. Higher frequencies (220 vs 140 Hz) of vibration stimulus provided in anterior regions of the thigh produced the fastest RTs. When participants were presented with more than one stimulus and response option, RTs increased. Findings suggest that long sensorimotor responses may be a limiting factor in the development of an artificial feedback system for mobility rehabilitation applications; however, feed-forward techniques could potentially help to address these limitations.

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“…Sensory feedback from the lower limbs is integral to maintaining upright gait [3][4], as well as executing complex tasks such as navigating around obstacles [5]. Reduced sensory input is at least partially responsible for the balance and mobility impairments recognized in the amputee population, including abnormal and less efficient gait kinematics [6][7][8] and increased risk of loss of balance resulting in falls [4]. Therefore, mitigating these impairments and enabling an acceptable level of functional mobility for individuals with LLA is a primary goal in prosthetic rehabilitation.…”

Section: Introductionmentioning

confidence: 99%

Effects of cognitive load and prosthetic liner on volitional response times to vibrotactile feedback

Sharma¹,

Leineweber²,

Andrysek³

2016

J Rehabil Res Dev

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Abstract-Artificial tactile feedback systems can improve prosthetic function for people with amputation by substituting for lost proprioception in the missing limb. However, limited data exists to guide the design and application of these systems for mobility and balance scenarios. The purpose of this study was to evaluate the performance of a noninvasive artificial sensory feedback (ASF) system on lower-limb function in the presence of a cognitive load and a liner interface. Reaction times (RTs) and accuracy of leg-movement responses to vibratory stimuli at the thigh were recorded for 12 nondisabled individuals and 3 participants with transfemoral amputation using a custom-built testing apparatus. The results indicate that the addition of a cognitive load increases response times relative to the baseline condition by 0.26 to 0.33 s. The prosthetic liner produced a less pronounced increase in RT of 0.06 to 0.11 s. Participants were able to correctly identify the stimulus location with nearly 100% accuracy. These increased RTs are nontrivial and must be considered in designing ASF systems.

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Energy Expenditure of Walking with Prostheses

Cited by 65 publications

References 12 publications

A comparison between the suction suspension system and the hypobaric Iceross Seal-In® X5 in transtibial amputees

A comparison between the suction suspension system and the hypobaric Iceross Seal-In® X5 in transtibial amputees

Toward an artificial sensory feedback system for prosthetic mobility rehabilitation: Examination of sensorimotor responses

Effects of cognitive load and prosthetic liner on volitional response times to vibrotactile feedback

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