Design of a novel prosthetic socket: Assessment of the thermal performance

Webber, Christina M.; Davis, Brian L.

doi:10.1016/j.jbiomech.2015.02.048

Cited by 30 publications

(27 citation statements)

References 9 publications

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“…However, further research is required to confirm the effectiveness of this liner for temperature and perspiration control with prostheses (Wernke et al, 2015). In another effort, as a proof of concept study, the prototype of an air-based helical cooling channel was designed (C. M. Webber & Davis, 2015). This cooling system showed promising results in prosthetic simulated model and bench-top evaluation.…”

Section: Background and Aimmentioning

confidence: 99%

“…This cooling system showed promising results in prosthetic simulated model and bench-top evaluation. As the phantom prosthetic model lacks prosthetic liner inside the socket, further research is required to confirm its applicability in real situations (C. M. Webber & Davis, 2015). The prototype of a temperature measurement and control (TM&C) system was designed, fabricated, and evaluated in another study (Ghoseiri, Zheng, Hing, Safari, & Leung, 2015).…”

Section: Background and Aimmentioning

confidence: 99%

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Temperature measurement and control system for transtibial prostheses: Single subject clinical evaluation

Ghoseiri

Zheng

Leung

et al. 2017

Assistive Technology

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The snug fit of a prosthetic socket over the residual limb can disturb thermal balance and put skin integrity in jeopardy by providing an unpleasant and infectious environment. The prototype of a temperature measurement and control (TM&C) system was previously introduced to resolve thermal problems related to prostheses. This study evaluates its clinical application in a setting with reversal, single subject design. The TM&C system was installed on a fabricated prosthetic socket of a man with unilateral transtibial amputation. Skin temperature of the residual limb without prosthesis at baseline and with prosthesis during rest and walking was evaluated. The thermal sense and thermal comfort of the participant were also evaluated. The results showed different skin temperature around the residual limb with a temperature decrease tendency from proximal to distal. The TM&C system decreased skin temperature rise after prosthesis wearing. The same situation occurred during walking, but the thermal power of the TM&C system was insufficient to overcome heat build-up in some regions of the residual limb. The participant reported no significant change of thermal sense and thermal comfort. Further investigations are warranted to examine thermography pattern of the residual limb, thermal sense, and thermal comfort in people with amputation.

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Section: Background and Aimmentioning

confidence: 99%

Section: Background and Aimmentioning

confidence: 99%

Temperature measurement and control system for transtibial prostheses: Single subject clinical evaluation

Ghoseiri

Zheng

Leung

et al. 2017

Assistive Technology

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“…The problem of insufficient heat exchange in the prosthetic socket has been addressed by a number of research and development projects [10][11][12]. Published works include studies on sockets that were structurally modified with cooling channels [13] or thermoelectric elements based on the Peltier effect [14], achieving a desired cooling effect either way. However, none of the described technologies is advanced enough to facilitate clinical trials and outcome assessments beyond mere temperature measurement.…”

Section: Introductionmentioning

confidence: 99%

Effect of temperature-control liner materials on long-term outcomes of lower limb prosthesis use: a randomized controlled trial protocol

Fiedler

Singh

Zhang

2020

Trials

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Background: In people living with limb loss, addressing the resulting functional deficit with prostheses increases the risk for secondary conditions such as pressure sores, impaired blood perfusion, and injuries from accidental falls. Any of those occurrences can render the prosthesis temporarily useless, making it challenging for users to engage in many activities of daily life, including work, exercise, and social participation. Many of the described issues originate at the interface between residual limb and prosthetic socket, where the objectives of sufficient weight distribution and suspension are conflicting with the necessity to facilitate heat exchange and limit contact pressure and friction. Recently, prosthesis liners that contain phase-change material have become commercially available, holding the promise that the micro climate at the interface between the residual limb skin and the prosthetic socket can be regulated to reduce the users' tendency to sweat. Preliminary studies on these liners indicate that the socket temperatures inside the socket stayed lower and rose slower than in conventional liners. However, the clinical relevance of those findings remains unclear. The purpose of this study is to investigate whether longer (6+ months) periods of use of phase-change material based temperature-control liners have clinically meaningful effects. Methods: The protocol is a double-blind longitudinal cross-over research design. A sample of trans-tibial prosthesis users are wearing their regular gel or silicone liners for six months and phase-change material liners for another six months in a randomized sequence. Their prostheses is equipped with activity monitors to detect days when they could not wear their prosthesis. In six-week intervals, individuals' activity, physical performance, and overall prosthesis assessment is recorded using standardized methods. Discussion: Expected results will inform prescription and reimbursement practice of phase-change material-based prosthesis liners and will help improve and economize prosthetic fitting for people with limb loss. The design and duration of the protocol, including randomization, blinding, and within-subject comparison, will generate scientific evidence of a comparably high level. Inclusion of a comparably large sample and different climates, e.g. across all four seasons, will make findings applicable to a large number of prosthesis users.

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“…Webber and Davis incorporated a helical channel in the socket wall to cool the residual limb [15]. Ghoseiri et al constructed a socket with a thermoelectric heat pump coupled to an aluminum heat-transfer structure integral with the socket wall [16].…”

Section: Introductionmentioning

confidence: 99%

Prosthesis management of residual-limb perspiration with subatmospheric vacuum pressure

et al. 2016

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Abstract-For the ambulatory person with lower-limb amputation, insufficient management of perspiration can result in inadequate prosthesis adherence, reduced mobility, and discomfort. This study compared a dynamic air exchange (DAE) prosthesis designed to expel accumulated perspiration with a total surface bearing suction socket (Suction) that cannot. Five people with unilateral transtibial amputation participated in a randomized, crossover experiment. All subjects were given a 1 wk acclimation period to each study prosthesis while we measured their step activity levels. A rest-walk-rest protocol, including a 30 min treadmill walk at a self-selected speed while wearing thermally insulative garments, was then used to observe residual-limb skin temperatures and perspiration. Afterward, subject opinions about the prostheses were assessed with questionnaires. During the weeklong acclimation period, no statistical difference in step activity levels were detected between prostheses (p = 0.22), but this may have been due to self-reported behavioral modifications. During the rest-walkrest protocol, no differences in skin temperatures were observed (p = 0.37). The DAE prosthesis accumulated 1.09 +/-0.90 g and expelled 0.67 +/-0.38 g of perspiration, while the Suction prosthesis accumulated 0.97 +/-0.75 g. The questionnaire results suggest that participants were receptive to both prostheses. The DAE prosthesis was able to expel more than a third of the total perspiration, suggesting it may enable longer uninterrupted periods of perspiration-inducing activity.

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Design of a novel prosthetic socket: Assessment of the thermal performance

Cited by 30 publications

References 9 publications

Temperature measurement and control system for transtibial prostheses: Single subject clinical evaluation

Temperature measurement and control system for transtibial prostheses: Single subject clinical evaluation

Effect of temperature-control liner materials on long-term outcomes of lower limb prosthesis use: a randomized controlled trial protocol

Prosthesis management of residual-limb perspiration with subatmospheric vacuum pressure

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