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Bone surface preparation in cemented joint replacement

R S Majkowski1, A W Miles, G C Bannister

  • 1University of Bristol, England.

The Journal of Bone and Joint Surgery. British Volume
|May 1, 1993
PubMed
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Pressurized lavage significantly enhances cement penetration and shear strength at the bone-cement interface, outperforming traditional brushing methods for improved orthopedic implant stability.

Area of Science:

  • Orthopedic Surgery
  • Biomaterials Science
  • Surgical Techniques

Background:

  • The cement-bone interface is critical for orthopedic implant success.
  • Suboptimal bone surface preparation can lead to weak interfaces and implant failure.
  • Evaluating bone preparation techniques is essential for improving cement fixation.

Purpose of the Study:

  • To compare the efficacy of nine bone surface preparation techniques.
  • To assess the impact of these techniques on cement penetration and shear strength.
  • To determine the optimal method for achieving a robust cement-bone interface.

Main Methods:

  • Bovine cancellous bone model used to test nine preparation techniques.
  • Measurements of cement penetration depth and shear strength at the interface.

Related Experiment Videos

  • Comparison of unprepared bone, brushing with irrigation, and pressurized lavage.

    • Main Results:

    • Unprepared bone showed minimal cement penetration (0.2 mm) and low shear strength (1.9 MPa).
    • Brushing with irrigation yielded improved but variable results (0.6-1.4 mm penetration, 1.5-9.9 MPa shear strength).
    • Pressurized lavage achieved significantly greater penetration (4.8-7.9 mm) and shear strength (26.5-36.1 MPa), exceeding bone strength.

    Conclusions:

    • Pressurized lavage is highly effective for bone surface preparation in orthopedic procedures.
    • This technique consistently improves cement-bone interface strength, reducing failure risk.
    • Pulsed or continuous jets, temperature, and combination with brushing do not alter pressurized lavage efficacy.