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Bone defect determines acetabular revision surgery.

Eduardo García-Cimbrelo1, Eduardo García-Rey

  • 1Orthopaedic Surgery Department, Hospital La Paz - IdiPAZ, Madrid - Spain.

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Summary

Acetabular revision surgery outcomes depend on bone defect size. Smaller defects (Paprosky 1-2) benefit from cementless cups, while larger defects (Paprosky 3A-3B) and pelvic discontinuity require advanced techniques like allografts and acetabular reconstruction.

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Area of Science:

  • Orthopedic surgery
  • Biomaterials science
  • Bone defect reconstruction

Background:

  • Acetabular revision surgery is complex, with outcomes influenced by the extent of bone defect.
  • Paprosky classification system categorizes acetabular bone defects, guiding surgical strategy.

Purpose of the Study:

  • To review surgical techniques for acetabular revision based on Paprosky defect classification.
  • To highlight effective methods for managing bone defects in hip revision arthroplasty.

Main Methods:

  • Analysis of surgical approaches for acetabular defects categorized by Paprosky types 1-3.
  • Review of techniques including cementless cups, trabecular metal, morsellised allografts, cemented cups, acetabular plates, and cup-cages.

Main Results:

  • Porous hemispherical cementless cups with screws yield good results for Paprosky types 1 and 2 defects.
  • Trabecular metal implants enhance outcomes for smaller acetabular defects.
  • Morsellised allografts are effective for cavitary defects.
  • Impacted morsellised allografts with cemented cups show good results for Paprosky types 3A and 3B defects.
  • Pelvic discontinuity requires acetabular plates or cup-cages for reconstruction.

Conclusions:

  • Surgical strategy for acetabular revision must be tailored to the specific bone defect size and type.
  • Various reconstructive options, from cementless cups to complex acetabular reconstruction, provide solutions for diverse acetabular defects.