Updated: Jul 16, 2026

Fabrication of Mechanically Tunable and Bioactive Metal Scaffolds for Biomedical Applications
Published on: December 8, 2015
Bill Rogers1, Gordon W Bosker, Richard H Crawford
1Department of Rehabilitation Medicine, University of Texas Health Science Center at San Antonio, TX, USA. rogers@uthscsa.edu
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This study explored how selective laser sintering (SLS) could be used to create advanced prosthetic sockets. The researchers focused on using solid freeform fabrication (SFF) to produce complex socket designs at the same cost as simpler ones. They found that SLS allowed for the integration of comfort-enhancing features and fixtures compatible with standard prosthetic hardware. The six-year development period demonstrated that SFF could be a cost-effective and flexible method for socket fabrication. The results suggest that SFF has the potential to improve prosthetic socket design and production.
Area of Science:
Background:
Traditional prosthetic socket fabrication relies on tooling and manual processes. Solid freeform fabrication (SFF) offers a different approach by using digital models to create parts without tooling. This method can reduce fabrication costs based on part volume rather than complexity. However, few studies have explored how to fully use SFF's potential in prosthetics. The technology allows for complex socket designs at the same cost as simpler ones. Design changes become software-driven rather than requiring physical retooling. Despite these advantages, prior work has not fully integrated SFF into socket development. This gap motivated researchers to explore advanced socket designs using SFF techniques.
Purpose Of The Study:
The goal of the research was to develop advanced prosthetic sockets using selective laser sintering (SLS). The team aimed to leverage SFF's ability to fabricate complex designs at low cost. They focused on adding comfort-enhancing structural features to socket designs. The study also aimed to incorporate fixtures compatible with industry-standard hardware. Researchers wanted to test whether SLS could produce prosthetic-grade materials effectively. The six-year timeline allowed for iterative improvements in socket design and fabrication. The work sought to demonstrate how SFF could be used to create functional prosthetic components. The study aimed to show how software-driven design changes could be applied to socket development.
The main advantage is that fabrication cost depends on part volume, not complexity. This allows for complex socket designs at the same cost as simpler ones.
The team added structural features to the socket designs to improve user comfort, using software to implement these changes without retooling.
SLS was selected because it can fabricate prosthetic-grade materials suitable for socket production, ensuring functional and durable components.
Fixtures were added to the socket designs to ensure compatibility with standard prosthetic hardware, improving usability and integration.
Main Methods:
The research team used selective laser sintering (SLS) as the fabrication method. They developed a process for creating prosthetic sockets from digital models. The SFF process allowed for complex geometries without requiring additional tooling. The team tested different materials suitable for prosthetic use with SLS. They incorporated structural features into socket designs to improve comfort. The design process included adding fixtures to support standard prosthetic hardware. The six-year study involved iterative testing and refinement of socket prototypes. The team focused on optimizing fabrication parameters to ensure functional socket performance.
Main Results:
The study demonstrated that SLS could produce prosthetic sockets with complex structural features. The fabrication cost remained consistent regardless of socket complexity. The team successfully integrated comfort-enhancing design elements into socket prototypes. They developed fixtures compatible with industry-standard prosthetic hardware. The SLS process allowed for rapid design iterations without requiring new tooling. The materials used met the requirements for prosthetic socket durability. The six-year development period led to improved socket designs and fabrication techniques. The results showed that SFF could be a viable method for advanced prosthetic socket production.
Conclusions:
The authors concluded that SFF, specifically SLS, can be used to fabricate advanced prosthetic sockets. The technology allows for complex designs at low cost by focusing on part volume rather than complexity. The study showed that comfort features and hardware fixtures could be integrated into socket designs. The SLS process enabled software-driven design changes without the need for retooling. The six-year development period demonstrated the feasibility of using SFF for prosthetic socket fabrication. The results suggest that SFF can support the production of functional and comfortable prosthetic components. The authors propose that SFF could be used to create customized sockets with built-in features. The study highlights the potential of SFF to transform prosthetic socket design and fabrication.
The six-year study led to advanced socket designs with comfort features and hardware compatibility, demonstrating SLS's potential for prosthetic fabrication.
The authors propose that SFF could transform prosthetic socket design by enabling complex, customizable sockets at low cost.