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Related Experiment Video

Updated: May 22, 2026

Bioelectric Analyses of an Osseointegrated Intelligent Implant Design System for Amputees
14:31

Bioelectric Analyses of an Osseointegrated Intelligent Implant Design System for Amputees

Published on: July 15, 2009

Patient specific implants for amputation prostheses: design, manufacture and analysis.

P Devasconcellos1, V K Balla, S Bose

  • 1W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164-2920, USA.

Veterinary and Comparative Orthopaedics and Traumatology : V.C.O.T
|May 15, 2012
PubMed
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Custom 3D-printed titanium implants with controlled porosity were designed and manufactured for amputee prostheses. This approach enhances bone integration and load transfer for improved prosthetic attachment and long-term stability.

Area of Science:

  • Biomaterials Engineering
  • Additive Manufacturing
  • Orthopedic Implants

Background:

  • Amputation prostheses often face challenges with load transfer and proprioception.
  • Current prosthetic attachment methods can lead to complications and instability.

Purpose of the Study:

  • To design, manufacture, and analyze custom titanium implants with functional macrostructural gradation.
  • To optimize implant design for improved bone cavity fit and mechanical performance.
  • To utilize additive manufacturing for creating patient-specific implants with controlled porosity.

Main Methods:

  • Computed tomography (CT) scans of canine cadavers were used to obtain geometrical data for custom implant design.
  • Three generations of implant designs were iteratively optimized based on fit/fill analysis and mechanical compression testing.

Related Experiment Videos

Last Updated: May 22, 2026

Bioelectric Analyses of an Osseointegrated Intelligent Implant Design System for Amputees
14:31

Bioelectric Analyses of an Osseointegrated Intelligent Implant Design System for Amputees

Published on: July 15, 2009

  • Laser Engineered Net Shaping (LENS™) was employed to fabricate the final Ti6Al4V alloy implant with region-specific porosity.

    • Main Results:

    • Design refinements increased bone cavity fill from 58% to 83%.
    • The addition of a flange significantly improved the compressive load-carrying capacity by over seven times.
    • LENS™ fabrication successfully incorporated 20-30% porosity in the proximal region and 1-2% in the distal region of the implant.

    Conclusions:

    • Patient-specific implants with direct skeletal connection can improve load transfer and proprioception in amputees.
    • Laser Engineered Net Shaping (LENS™) facilitates rapid fabrication of custom implants with site-specific porosity and gradients for enhanced long-term stability.