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Pelvic underpinning: eight years' experience.

P A Butler-Manuel1, S E James, J A Shepperd

  • 1Hastings Orthopaedic Centre, Royal East Sussex Hospital, England.

The Journal of Bone and Joint Surgery. British Volume
|January 1, 1992
PubMed
Summary
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A novel surgical technique reconstructs acetabular floor defects using specialized nails and bone cement. This method successfully supported acetabular prostheses in 47 patients with no device failures observed during follow-up.

Area of Science:

  • Orthopedic surgery
  • Biomaterials engineering
  • Reconstructive surgery

Background:

  • Major acetabular floor defects pose significant reconstructive challenges in hip surgery.
  • Existing methods may have limitations in stability and long-term outcomes.
  • A need exists for reliable techniques to restore acetabular integrity.

Purpose of the Study:

  • To describe and evaluate a new method for reconstructing major acetabular floor defects.
  • To assess the clinical efficacy and safety of this novel technique.

Main Methods:

  • A reconstructive technique involving placement of specialized nails into the ilium, ischium, and pubis of the hemipelvis.
  • Attachment of curved lugs to these nails, which are then coalesced with bone cement to create a supportive platform.

Related Experiment Videos

  • Standard acetabular prosthesis placement onto the constructed platform.
  • Retrospective analysis of 47 cases with a mean follow-up of 4.4 years.

    • Main Results:

    • Successful reconstruction of major acetabular floor defects in all 47 cases.
    • No instances of acetabular cup loosening were reported.
    • No migration of the reconstructive device was observed during the follow-up period.
    • Mean follow-up duration of 4.4 years (range: 1 to 8 years).

    Conclusions:

    • The described nail-and-cement platform technique provides a stable and effective solution for major acetabular floor defects.
    • This method demonstrates promising durability and safety, with no observed loosening or migration.
    • Further investigation may validate this approach as a standard reconstructive option.