Hands‐Off and Hands‐On Casting Consistency of Amputee below Knee Sockets Using Magnetic Resonance Imaging

Safari, Reza; Rowe, Peter; McFadyen, Angus; Buis, Arjan

doi:10.1155/2013/486146

Cited by 18 publications

(42 citation statements)

References 26 publications

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“…Consistency between prosthetists has not been extensively investigated in the literature, however, a desire for reproducibility and consistency has been called for. 20,21 This finding provides insight into a potential method to improve this constancy between prosthetists.…”

Section: Discussionmentioning

confidence: 82%

Clinical utility of pressure feedback to socket design and fabrication

Armitage

Buller²,

Rajan

et al. 2020

Prosthetics &Amp; Orthotics International

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Background: The clinical utility of measuring pressure at the prosthetic socket-residual limb interface is currently unknown. Objectives: This study aimed to identify whether measuring interface pressure during prosthetic design and fabrication results in closer agreement in pressure measurements between sockets made by different clinicians, and a reduction in pressure over areas of concern. It also investigated whether clinicians value knowing the interface pressure during the fabrication process. Study design: Mixed methods. Methods: Three prosthetists designed a complete prosthetic system for a transtibial residual limb surrogate. Standardised mechanical testing was performed on each prosthetic system to gain pressure measurements at four key anatomical locations. These measurements were provided to the clinicians, who subsequently modified their sockets as each saw fit. The pressure at each location was re-measured. Each prosthetist completed a survey that evaluated the usefulness of knowing interface pressures during the fabrication process. Results: Feedback and subsequent socket modifications saw a reduction in the pressure measurements at three of the four anatomical locations. Furthermore, the pressure measurements between prosthetists converged. All three prosthetists found value in the pressure measurement system and felt they would use it clinically. Conclusions: Results suggest that sensors measuring pressure at the socket-limb interface has clinical utility in the context of informing prosthetic socket design and fabrication. If the technology is used at the check socket stage, iterative designs with repeated measurements can result in increased consistency between clinicians for the same residual limb, and reductions in the magnitudes of pressures over specific anatomical landmarks. Clinical relevance This study provides new information on the value of pressure feedback to the prosthetic socket design process. It shows that with feedback, socket modifications can result in reduced limb pressures, and more consistent pressure distributions between prosthetists. It also justifies the use of pressure feedback in informing clinical decisions.

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Section: Discussionmentioning

confidence: 82%

Clinical utility of pressure feedback to socket design and fabrication

Armitage

Buller²,

Rajan

et al. 2020

Prosthetics &Amp; Orthotics International

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show abstract

“…These factors, which have a great effect on the socket fit success, are rarely reflected upon and reported by journal articles. Previous studies showed that the socket shape-capturing process (casting) and the subsequent plaster mold rectification lack inter-and intrasocket shape consistency for HS and PTB socket designs but the inconsistencies were less for HS sockets than for the corresponding manually casted and fabricated prosthetic sockets [49][50][51]. Additionally, the effect of prosthetic alignment also has an effect on socket fit and the related outcomes, such as interface pressure.…”

Section: Discussionmentioning

confidence: 99%

Systematic review of effects of current transtibial prosthetic socket designs—Part 1: Qualitative outcomes

Safari

Meier

2015

J Rehabil Res Dev

Self Cite

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Abstract-This review is an attempt to untangle the complexity of transtibial prosthetic socket fit, determine the most important characteristic for a successful fitting, and perhaps find some indication of whether a particular prosthetic socket type might be best for a given situation. Further, it is intended to provide directions for future research. We followed the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines and used medical subject headings and standard key words to search for articles in relevant databases. No restrictions were made on study design or type of outcome measure. From the obtained search results (n = 1,863), 35 articles were included. The relevant data were entered into a predefined data form that incorporated the Downs and Black risk of bias assessment checklist. Results for the qualitative outcomes (n = 19 articles) are synthesized. Total surface bearing sockets lead to greater activity levels and satisfaction in active persons with amputation, those with a traumatic cause of amputation, and younger persons with amputation than patellar tendon bearing sockets. Evidence on vacuum-assisted suction and hydrostatic sockets is inadequate, and further studies are much needed. To improve the scientific basis for prescription, comparison of and correlation between mechanical properties of interface material, socket designs, user characteristics, and outcome measures should be conducted and reported in future studies.

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“…68 Studies have shown that the pressure-casting approach results in greater repeatability than the hand-casting method. 69,70 However, the overall inter-cast volume difference was not considered clinically meaningful (i.e. smaller than the volume of a sock over the residual limb).…”

Section: Residual Limb Geometry Quantificationmentioning

confidence: 99%

Lower limb prosthetic interfaces

Safari

2020

Prosthetics &Amp; Orthotics International

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The human–prosthesis interface is one of the most complicated challenges facing the field of prosthetics, despite substantive investments in research and development by researchers and clinicians around the world. The journal of the International Society for Prosthetics and Orthotics, Prosthetics and Orthotics International, has contributed substantively to the growing body of knowledge on this topic. In celebrating the 50th anniversary of the International Society for Prosthetics and Orthotics, this narrative review aims to explore how human–prosthesis interfaces have changed over the last five decades; how research has contributed to an understanding of interface mechanics; how clinical practice has been informed as a result; and what might be potential future directions. Studies reporting on comparison, design, manufacturing and evaluation of lower limb prosthetic sockets, and osseointegration were considered. This review demonstrates that, over the last 50 years, clinical research has improved our understanding of socket designs and their effects; however, high-quality research is still needed. In particular, there have been advances in the development of volume and thermal control mechanisms with a few designs having the potential for clinical application. Similarly, advances in sensing technology, soft tissue quantification techniques, computing technology, and additive manufacturing are moving towards enabling automated, data-driven manufacturing of sockets. In people who are unable to use a prosthetic socket, osseointegration provides a functional solution not available 50 years ago. Furthermore, osseointegration has the potential to facilitate neuromuscular integration. Despite these advances, further improvement in mechanical features of implants, and infection control and prevention are needed.

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Hands‐Off and Hands‐On Casting Consistency of Amputee below Knee Sockets Using Magnetic Resonance Imaging

Cited by 18 publications

References 26 publications

Clinical utility of pressure feedback to socket design and fabrication

Clinical utility of pressure feedback to socket design and fabrication

Systematic review of effects of current transtibial prosthetic socket designs—Part 1: Qualitative outcomes

Lower limb prosthetic interfaces

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