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Noncemented total knee arthroplasty.

G C Landon, J O Galante, M M Maley

    Clinical Orthopaedics and Related Research
    |April 1, 1986
    PubMed
    Summary
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    Porous titanium fiber composite enables cementless total knee replacement by promoting bone ingrowth for prosthetic attachment. Early results show excellent pain relief and improved function, demonstrating a feasible and effective surgical approach.

    Area of Science:

    • Biomaterials Science
    • Orthopedic Surgery
    • Medical Device Engineering

    Background:

    • Porous titanium fiber composite demonstrates effective bone ingrowth for prosthetic device attachment.
    • Titanium exhibits excellent biocompatibility in long-term primate studies.
    • This technology facilitates the development of cementless orthopedic implants.

    Purpose of the Study:

    • To evaluate the feasibility and early clinical outcomes of a cementless total knee replacement system using porous titanium fiber composite interfaces.
    • To assess the efficacy of anchoring the tibial component without cement.
    • To determine if this design provides pain relief, functional recovery, and range of motion comparable or superior to existing designs.

    Main Methods:

    • Development of a cementless, unconstrained total knee replacement system featuring porous titanium fiber composite interfaces.

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  • Inclusion of posterior cruciate ligament retention in the design.
  • Pilot study involving 34 knees to assess tibial component fixation via bone ingrowth.
  • Selection of a wide range of sizes for precise patient fitting and load distribution.

    • Main Results:

    • The pilot study demonstrated the feasibility of cementless tibial component anchoring.
    • Patients reported excellent pain relief.
    • Rapid return of function and range of motion exceeding previous designs were observed.
    • The porous titanium fiber composite interfaces facilitated direct attachment via bone ingrowth.

    Conclusions:

    • Cementless total knee replacement using porous titanium fiber composite interfaces is a feasible and effective approach.
    • This technology offers significant benefits, including excellent pain relief and improved functional outcomes.
    • The design, incorporating posterior cruciate ligament retention and precise fitting, leads to superior patient results.