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Related Experiment Video

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Emerging technologies in arthroplasty: additive manufacturing.

Samik Banerjee1, Gene Kulesha2, Mark Kester2

  • 1Department of Orthopaedic Surgery, Center for Joint Preservation and Replacement, Rubin Institute for Advanced Orthopedics, Sinai Hospital of Baltimore, Baltimore, Maryland.

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|April 26, 2014
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Summary
This summary is machine-generated.

Additive manufacturing enables complex orthopedic implants. Further clinical trials are needed to confirm benefits like durable fixation and reduced stress shielding for improved implant survivorship.

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Orthopedic Surgery

Background:

  • Additive manufacturing (AM), or 3D printing, creates physical components from digital models layer by layer.
  • Initially for prototypes, AM is now used for end-use parts in aerospace, automotive, and biomedical fields.
  • Complex geometries previously unmanufacturable are now possible with AM, attracting implant manufacturers and orthopedic specialists.

Purpose of the Study:

  • To describe additive manufacturing technology for orthopedic applications.
  • To review AM applications in orthopedic subspecialties and hip/knee arthroplasty.
  • To discuss current limitations and future potential of AM in orthopedics.

Main Methods:

  • Literature review of additive manufacturing techniques and applications.
  • Analysis of current use cases in orthopedic implant production.
  • Discussion of challenges and future research directions for AM in orthopedics.

Main Results:

  • Additive manufacturing allows for the creation of complex implant geometries (solid, mesh, foam, coated).
  • AM is increasingly adopted for end-use components, including in hip and knee arthroplasty.
  • A paucity of clinical trials currently limits the full understanding of AM's benefits in orthopedics.

Conclusions:

  • Additive manufacturing holds significant promise for revolutionizing orthopedic implant production.
  • Further clinical studies are essential to validate AM benefits, including durable fixation, reduced stress shielding, and enhanced implant survivorship.
  • AM may eventually replace conventional manufacturing methods like casting and machining for implants.