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Comparison of reconstructive techniques after acetabular resection for pelvic chondrosarcoma
Matthew T Houdek1, Jay S Wunder2, Matthew P Abdel1
1Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA.
The Bone & Joint Journal
|February 1, 2021
Summary
Hip reconstruction after acetabular chondrosarcoma resection is complex. Tantalum total hip arthroplasty (THA) offers improved outcomes, though reconstruction increases complication rates.
Area of Science:
- Orthopedic surgery
- Oncology
- Reconstructive surgery
Background:
- Periacetabular chondrosarcoma resection requires complex hip reconstruction.
- Previous studies lack comparisons with modern techniques.
- High complication rates are associated with hip reconstruction.
Purpose of the Study:
- Compare tantalum acetabular reconstruction outcomes.
- Evaluate historical reconstruction techniques.
- Assess outcomes of no reconstruction versus reconstruction.
Main Methods:
- Retrospective review of 66 patients (mean age 53) undergoing acetabular resection for chondrosarcoma.
- 36 patients underwent reconstruction (saddle prosthesis or tantalum THA).
- Mean follow-up was nine years.
Main Results:
- No significant difference in mobility or Musculoskeletal Tumor Society (MSTS) scores between reconstruction and no reconstruction groups.
- Tantalum THA yielded significantly higher MSTS scores (78%) compared to saddle prosthesis (47%) or no reconstruction (56%).
- Reconstruction patients experienced higher complication rates (81% vs 53%).
Conclusions:
- Acetabular reconstruction is technically demanding.
- Tantalum THA may benefit selected patients, but mid-term follow-up is needed.
- No reconstruction offers acceptable functional outcomes when reconstruction is not feasible.

