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Related Experiment Videos

Acetabular revision without cement.

Tze-Pui Ng1, Kwong-Yuen Chiu

  • 1Division of Join Replecement Surgery, Department of Orthopaedic Surgery, The University of Hong Kong, Queen Mary Hospital, Polfulman, Hong Kong.

The Journal of Arthroplasty
|June 24, 2003
PubMed
Summary

Cementless acetabular revision surgery shows promising midterm results. This study found a 92% implant survival rate at 72 months, with minimal clinical impact from radiolucent lines.

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Area of Science:

  • Orthopedic Surgery
  • Biomaterials Science
  • Radiology

Background:

  • Acetabular revision surgery addresses complex bone defects in total hip arthroplasty.
  • Cementless implants are increasingly used, but their long-term performance in revisions requires evaluation.

Purpose of the Study:

  • To evaluate the clinical and radiologic outcomes of cementless acetabular revision surgery.
  • To assess implant survivorship and the impact of bone grafting and screw augmentation.

Main Methods:

  • Retrospective review of 47 cementless acetabular revisions by a single surgeon.
  • Utilized the American Academy of Orthopaedic Surgeons (AAOS) acetabular defect classification.
  • Assessed outcomes using Harris Hip score, radiologic evaluation, and Kaplan-Meier survivorship analysis.

Main Results:

  • Significant improvement in Harris Hip score (72 to 90 points).
  • 92% Kaplan-Meier survivorship at 72 months, with only 2% revision for progressive loosening.
  • Nonprogressive radiolucent lines were common (32%) but clinically unimportant, showing no migration.

Conclusions:

  • Cementless acetabular revision with AML Duraloc cups demonstrates encouraging midterm efficacy.
  • Morcellized allograft and screw augmentation did not significantly impact cup survival.
  • This technique is a viable option for acetabular reconstruction in revision hip arthroplasty.

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