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Clinical implication of interface pressure for a new prosthetic suspension system
Hossein Gholizadeh1, Noor Azuan Abu Osman, Arezoo Eshraghi
1Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia. gholizadeh@um.edu.my.
Biomedical Engineering Online
|July 2, 2014
Summary
The new HOLO suspension system for lower limb prostheses offers more uniform pressure distribution compared to traditional pin/lock systems. Amputee satisfaction was comparable, suggesting improved comfort and load management.
Area of Science:
- Biomedical Engineering
- Prosthetics and Orthotics
- Rehabilitation Science
Background:
- Prosthetic suspension systems significantly influence pressure distribution within the prosthetic socket.
- Understanding these effects is crucial for optimizing prosthetic device design and user comfort.
Purpose of the Study:
- To evaluate a novel HOLO suspension system for lower limb prostheses.
- To compare interface pressure and amputee satisfaction between the HOLO system and a standard pin/lock system.
Main Methods:
- Ten transtibial amputees participated, walking at self-selected speeds on level ground.
- Interface pressure was measured using F-socket transducers at proximal, middle, and distal residual limb sites.
- Subjective feedback on user satisfaction and comfort was collected for both suspension systems.
Main Results:
- The pin/lock system showed significantly higher proximal and distal pressure during the swing phase of gait.
- Subjective feedback indicated stump traction with the pin/lock system.
- The HOLO system demonstrated more uniform pressure distribution, particularly on the lateral and medial sides during the stance phase.
Conclusions:
- The HOLO suspension system is compatible with the pin/lock system regarding leg suspension and amputee satisfaction.
- The HOLO system provides more uniform pressure distribution over the residual limb, potentially enhancing comfort and reducing risks associated with uneven loading.
