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Cementless Knee Implants: Clinical Trends and Technological Innovations

Aug 18, 2025 07:08 CST Updated 07:08
Restor3d

3D Printing Implant Supplier

Exactech

Orthopedic Implant Device Manufacturer

Source: Bone Future
Reprint Requirements: You can directly republish, but please credit the source at the beginning of the article.
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Why is Cementless Knee "Heating Up"?According toData from the American AAOS registry shows that the application proportion of cementless TKA has surged from 2% in 2012 to 22% in 2023. Behind this rise are multiple driving factors: an increase in younger patient populations, clinical demands for long-term stability, and the transformation of surgical procedures toward a faster pace—material and structural innovations are reshaping the landscape of general surgery.
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Who is "running" on this track? Amid this global trend, different companies have their own product positioning and technical approaches.Each has its own characteristics. The following are the key products and critical data of three representative manufacturers:

1

Zimmer Biomet: OsseoTi + PPS Platform
Technology Focus:
  • OsseoTi Porous Metal Structure Simulates Cancellous Bone for More Natural Bone Integration.
  • PPS coating enhances initial grip stability and promotes long-term bone integration.
  • Keel Tibia Product Design Allows Intraoperative Switching from Cementless to Cemented Without Additional Bone Cuts or Instrument Changes.
Innovation Indicators: OsseoTi structure with approximately 70% porosity and an average pore size of about 475 μm, promoting bone density recovery and long bone integration.
Clinical manifestations: Removing bone cement saves approximately 10–11 minutes of operation time, improving OR efficiency; the standard design has been verified through animal models, showing good initial osseointegration performance of OsseoTi at 4 weeks.
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2

Restor3d: Fully 3D-Printed TIDAL Technology
  • Full 3D printing of bone structures using the TIDAL process achieves consistent porosity distribution and osseointegration.
  • Launch of iTotal Identity CR System: The First Combination of Personalized Design and Cementless Fixation.
Clinical Indicators:
  • FDA 510(k) approval has been obtained, with an expected limited market release in Q3 2025.
  • Initial feedback indicates that postoperative PROMs (Patient-Reported Outcome Measures) and surgical efficiency are superior to conventional systems.


3

Exactech：Truliant Porous 3D
  • By precisely controlling the pore structure through AM, mimicking cancellous bone tissue, a dual-stability design for both initial and long-term fixation is achieved.
  • Product features include peripheral support columns, dual V-shaped keels, and optional screws, enhancing rotational stability.
Milestone: Received FDA 510(k) Approval in 2024; Touted as the Fastest-Growing Product in the Company's Knee Portfolio.
Practical Efficiency: When used in conjunction with a GPS intelligent navigation system, it streamlines the surgical process to meet medical efficiency requirements.
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4

Bone Future Observation: Inspiration for Innovation in Orthopedic Devices in China
  • Dual-Track Innovation Driven by Materials and Structure Offers Lessons for Chinese Companies: It's not just about imitating structures, but starting from the material level to build an integrated path of "surface + structure."
  • The modular design of Zimmer's intraoperative adaptability exemplifies that the platform should be compatible with various fixation strategies, and the ability to flexibly switch during surgery is the true clinical need.
  • The accumulation of real-world evidence needs to be strengthened, as overseas products disclose 2–5 years of follow-up data both before and after market entry. Domestic companies should simultaneously establish multi-center registration or real-world research pathways.
  • Increase in Younger Patients Highlights Differentiated Value: Cementless Design to Become Key Factor in "Durable Solution" as TKA Patient Population Trends Younger.
Three-dimensional printed porous tantalum prosthesis for treating ...

References
  • Zimmer Biomet OsseoTi Keel Tibia Product Manual and Design Documentation
  • Restor3d iTotal Identity FDA Approval Notice and Company Statement
  • Exactech Truliant Porous 3D FDA Approval News and Company Data Reference

 

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