Design of a novel tri-axial force sensor for optimized design of prosthetic socket for lower limb amputees

2016 ◽  
Author(s):  
Guido Sordo ◽  
Leandro Lorenzelli
Keyword(s):  
Axial Force ◽  
Lower Limb ◽  
Force Sensor ◽  
Optimized Design ◽  
Prosthetic Socket ◽  
Lower Limb Amputees

The development and internal consistency of the comprehensive lower limb amputee socket survey in active lower limb amputees

2018 ◽  
Vol 43 (1) ◽  
pp. 80-87 ◽  
Author(s):  
Robert Gailey ◽  
Anat Kristal ◽  
Jennifer Lucarevic ◽  
Shane Harris ◽  
Brooks Applegate ◽  
...  
Keyword(s):  
Internal Consistency ◽  
Lower Limb ◽  
Self Report ◽  
Cronbach’S Alpha ◽  
Convenience Sample ◽  
Cronbach's Alpha ◽  
Prosthetic Socket ◽  
Lower Limb Amputee ◽  
Report Measure ◽  
Lower Limb Amputees

Background: Prosthetic socket fit is an important element associated with successful ambulation and use of a prosthesis. Prosthetists and rehabilitation clinicians would benefit from an assessment tool that discriminates between and quantifies the multiple determinants that influence the lower limb amputee’s performance and satisfaction of a prosthetic socket. Objectives: To determine the internal consistency of the comprehensive lower limb amputee socket survey, a new self-report measure of prosthetic socket satisfaction that quantifies suspension, stability, comfort, and appearance. Study design: Cross-sectional sample of active amputees. Methods: Interviews were conducted with prosthetists, physical therapists, and lower limb amputees to identify clinical concerns and common activities influencing socket fit. An expert panel of five clinicians reviewed the items and constructed the original version of the comprehensive lower limb amputee socket survey which was then administered to a convenience sample of 47 active lower limb amputees. Item analysis and Cronbach’s alpha were used to determine the final version of the comprehensive lower limb amputee socket survey. Results: Following item raw score-to-total score correlation with Cronbach’s alpha for comprehensive lower limb amputee socket survey determinants, internal consistency improved when nine questions were eliminated. Conclusion: The comprehensive lower limb amputee socket survey is a self-report measure of prosthetic socket satisfaction with very good internal consistency. Clinical relevance When socket problems occur, the ability to determine the specific cause can reduce modification time, enhance socket fit, and promote patient satisfaction. A standardized multi-dimensional assessment measure of socket satisfaction enables prosthetists to quantify the multiple determinants of socket satisfaction, improve patient communication, and demonstrate the value of socket interventions.

Thermal Residual Limb Manikin to Test Novel Cooling Technologies for Prosthetic Sockets

2013 ◽  
Author(s):  
Kathleen J. Bates ◽  
Glenn K. Klute
Keyword(s):  
Lower Limb ◽  
Flow System ◽  
Vacuum Pump ◽  
Bench Test ◽  
Residual Limb ◽  
Liquid Cooling ◽  
Cooling Effectiveness ◽  
Prosthetic Socket ◽  
System Power ◽  
Lower Limb Amputees

Heat and perspiration inside the prosthesis cause discomfort and adherence problems for lower limb amputees. To bench test new prosthetic socket interventions, we developed a thermal residual limb manikin (TRLM) and used it to compare two novel cooling technologies: (1) a vacuum pump which provides ventilation across the skin (FLOW) and (2) a liquid cooling sleeve (SLEEVE). Power to maintain TRLM core temperature was measured to indicate cooling effectiveness. Power increased by 7% and 8% after 90 minutes of convective cooling and evaporative cooling, respectively, with the FLOW system. Power increased by 28% with the SLEEVE system.

A New Proposed Method to Reverse Engineer a Residual Limb for Prosthetic Socket - Procedure, Advantages and Challenges

2016 ◽  
Vol 852 ◽  
pp. 558-563
Author(s):  
Divya Singh ◽  
Richa Pandey
Keyword(s):  
Lower Limb ◽  
Present Model ◽  
Body Part ◽  
Cad Model ◽  
Residual Limb ◽  
Reverse Engineer ◽  
Prosthetic Socket ◽  
Human Body Part ◽  
Cad Cam ◽  
Lower Limb Amputees

A prosthetic replaces any missing human body part visibly and also aims to resume the normal functionality of the part. Reverse engineering extracts information from a present model or available design and develops a new model using advanced CAD tools. Nowadays the reverse engineered part can be combined with rapid prototyping by various software and integration of CAD-CAM platforms. In this paper, a new method to reverse engineer the residual limb information for lower limb amputees, in order to use it for analyzing and developing a prosthetic socket by scanning and developing a CAD model is proposed. Along this are discussed, the advantages and challenges. This work falls in the emerging field of interdisciplinary engineering, combining medical and advanced mechanical engineering on a humanitarian platform

scholarly journals Adaptive Foot in Lower-Limb Prostheses

2017 ◽  
Vol 2017 ◽  
pp. 1-15 ◽  
Author(s):  
Thilina H. Weerakkody ◽  
Thilina Dulantha Lalitharatne ◽  
R. A. R. C. Gopura
Keyword(s):  
Lower Limb ◽  
Uneven Surface ◽  
Design Concepts ◽  
Human Foot ◽  
Future Developments ◽  
Adaptive Capabilities ◽  
Adaptive Nature ◽  
Lower Limb Amputees ◽  
Artificial Prosthesis ◽  
Lower Limb Prostheses

The human foot consists of complex sets of joints. The adaptive nature of the human foot enables it to be stable on any uneven surface. It is important to have such adaptive capabilities in the artificial prosthesis to achieve most of the essential movements for lower-limb amputees. However, many existing lower-limb prostheses lack the adaptive nature. This paper reviews lower-limb adaptive foot prostheses. In order to understand the design concepts of adaptive foot prostheses, the biomechanics of human foot have been explained. Additionally, the requirements and design challenges are investigated and presented. In this review, adaptive foot prostheses are classified according to actuation method. Furthermore, merits and demerits of present-day adaptive foot prostheses are presented based on the hardware construction. The hardware configurations of recent adaptive foot prostheses are analyzed and compared. At the end, potential future developments are highlighted.

scholarly journals Understanding adaptive gait in lower-limb amputees: insights from multivariate analyses

2013 ◽  
Vol 10 (1) ◽  
pp. 98 ◽  
Author(s):  
John G Buckley ◽  
Alan R De Asha ◽  
Louise Johnson ◽  
Clive B Beggs
Keyword(s):  
Lower Limb ◽  
Multivariate Analyses ◽  
Adaptive Gait ◽  
Lower Limb Amputees

Piezoresistive Polymer-Based Materials for Real-Time Assessment of the Stump/Socket Interface Pressure in Lower Limb Amputees

2017 ◽  
Vol 17 (7) ◽  
pp. 2182-2190 ◽  
Author(s):  
Armando Ferreira ◽  
Vitor Correia ◽  
Emilia Mendes ◽  
Claudia Lopes ◽  
Jose Filipe Vilela Vaz ◽  
...  
Keyword(s):  
Real Time ◽  
Lower Limb ◽  
Interface Pressure ◽  
Socket Interface ◽  
Lower Limb Amputees ◽  
Time Assessment

scholarly journals Functional Expansion of Sensorimotor Representation and Structural Reorganization of Callosal Connections in Lower Limb Amputees

2012 ◽  
Vol 32 (9) ◽  
pp. 3211-3220 ◽  
Author(s):  
E. L. Simoes ◽  
I. Bramati ◽  
E. Rodrigues ◽  
A. Franzoi ◽  
J. Moll ◽  
...  
Keyword(s):  
Lower Limb ◽  
Structural Reorganization ◽  
Callosal Connections ◽  
Functional Expansion ◽  
Lower Limb Amputees
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