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Device and method for controlling cement thickness

C L Nelson, D W Haynes, M J Weber

    Clinical Orthopaedics and Related Research
    |September 1, 1980
    PubMed
    Summary
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    Surgeons can now achieve consistent cement thickness in joint replacements using novel methylmethacrylate spacers. This simple technique prevents bone-cement voids and ensures optimal prosthesis fixation.

    Area of Science:

    • Orthopedic Surgery
    • Biomaterials Engineering

    Background:

    • Achieving optimal cement mantle thickness between prosthesis and bone is crucial for joint replacement success.
    • Conventional cementing techniques risk thin cement layers or voids, potentially compromising fixation.

    Purpose of the Study:

    • To introduce a novel method for achieving predictable cement mantle thickness in acetabular component fixation.
    • To enhance the reliability and safety of the bone cement application process.

    Main Methods:

    • Development and utilization of small methylmethacrylate spacers placed between the acetabulum and the acetabular component.
    • Spacers prevent direct contact, ensuring a consistent cement layer and acting as a physical stop during component insertion.

    Main Results:

    Related Experiment Videos

    • The technique has been successfully employed in over 50 patients, demonstrating simplicity and reliability.
    • Consistent and predictable cement mantle thickness was achieved, eliminating voids and thin areas.
    • Spacers provided rigid fixation of the acetabular component during cement polymerization, improving cement packing.

    Conclusions:

    • The developed methylmethacrylate spacers offer a simple, reliable solution for achieving predictable cement mantle thickness in hip arthroplasty.
    • This method enhances bone cement application, reduces the risk of imperfections, and potentially improves long-term implant outcomes.