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International prosthetists' perspectives on adjustable-volume lower limb prosthetic sockets.
Martin P Kilbane1, Jeffrey Wensman2, Anthony R Gutierrez3
1Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, USA.
Prosthetics and Orthotics International
|May 15, 2026
Summary
Prosthetists worldwide report moderate success fitting adjustable-volume prosthetic sockets, with patient selection crucial for optimal outcomes. Further research is needed as these sockets gain market presence.
Area of Science:
- Prosthetics and Orthotics
- Biomedical Engineering
- Rehabilitation Science
Background:
- Adjustable-volume prosthetic sockets aim to manage residual limb volume fluctuations affecting socket fit.
- These newer systems' global adoption and ideal patient profiles require further clarification.
Purpose of the Study:
- To investigate global prosthetist experiences and perspectives on fitting various adjustable-volume prosthetic socket styles.
- To compare fitting experiences and outcomes between US and non-US prosthetists.
Main Methods:
- A global online survey was administered to prosthetists.
- The survey collected data on adjustable socket fitting successes, challenges, barriers, and amputation level impact.
- Responses were statistically analyzed and compared between US and non-US participants.
Main Results:
- 85% of 195 respondents had experience fitting adjustable sockets, with higher utilization in the US.
- Success rates varied by socket style (40.0%-75.1%), with no significant differences based on respondent location or amputation level.
- Qualitative feedback emphasized patient selection, timing of use, and prefabricated designs' implications.
Conclusions:
- Prosthetists globally achieve moderate success with adjustable-volume lower limb sockets across amputation levels.
- Continued expansion of the adjustable socket market necessitates further research on long-term outcomes to guide prescription practices.
