Abstract
Background
Reconstructions in case of acetabular bone loss in hip revision arthroplasty are challenging. A few techniques have been proposed, with inconstant outcomes. Biological reconstructions using bone allografts may address the acetabular bone loss and restore the hip anatomy. Aim of this work was the description of the surgical technique and the evaluation of the outcomes using a regional arthroplasty register.
Materials and methods
Minor or massive bone allografting was performed in hip revision arthroplasties in a tertiary center. Bulk allografts were used in severe acetabular bone losses. Fresh-frozen femoral heads were impacted in the bone cavity and porous cups were implanted; multihole sockets were used when necessary. In DeLee A zone, no grafts were used in order to reduce overstress graft resorption. The results were evaluated using a regional arthroplasty register, and a comparison with revisions without bone grafts was performed investigating re-revision rates and reasons for further revisions.
Results
At 10 years, acetabular revisions with bone allografts achieved a similar survival rate than revisions without bone grafts. The re-revisions occurred more frequently in revisions without bone allografts (10.8 vs. 9.7%). In the allograft cohort, septic loosening was lower (0.3 vs. 2.6%), whereas a higher rate of aseptic cup loosening was experienced (2.7 vs. 1.4%).
Conclusions
Bone allografts may provide a good restoration of the acetabular bone stock and the hip biomechanics. Septic loosening does not seems a major concern, whereas a higher rate of aseptic cup loosening should be expected when bone grafts are used.
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The last senior Author has received benefits for personal and professional use from a commercial party related directly and indirectly to the subject of this article (Zimmer, Warsaw, US; CeramTec, Plochingen, Germany; Adler Ortho, Milan, Italy, Cremascoli Ortho). The other authors declare that there is no potential conflict of interest relevant to this article.
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Busanelli, L., Castagnini, F., Bordini, B. et al. The biological acetabular reconstruction with bone allografts in hip revision arthroplasty. Musculoskelet Surg 103, 173–179 (2019). https://doi.org/10.1007/s12306-018-0573-5
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DOI: https://doi.org/10.1007/s12306-018-0573-5