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Title
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Outcome and EBRA migration analysis of a reconstruction cage in acetabular revision arthroplasty : a clinical and radiological study
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Author
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Abstract
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| Purpose Restoration cages and bone allografts have been proposed to manage severe acetabular bone defects. We aimed to investigate the migration behaviour of a restoration cup and impacted allograft bone in severe acetabular defects with Einzel-Bild-Rontgen-Analyse (EBRA). Methods Applying a retrospective study design, 64 cases treated between 2009 and 2016 were reviewed. We determined the preoperative Charlson Comorbidity Index (CCI), pre- to postoperative WOMAC score, blood loss and functional outcome. From preoperative x rays, the acetabular deficiencies were classified according to Paprosky. Cup migration analyses were performed with EBRA. Results Mean age at surgery was 73 (range: 38-93) years. According to the classification by Paprosky et al., 50% (n = 32) of our patients showed a type III B and 28.1% (n = 18) a type III A defect. Radiological follow-up for migration analysis was 35 (range: 4-95) months. Migration analysis showed a mean cup migration of 0.7 mm (range: 5.7-9.6) medial and 1.8 mm (range: 1.7-12.6) cranial. Conclusion In conclusion, acetabular restoration cages in combination with bone impaction grafting showed a low revision rate at a mean follow-up of 35 months. Mean cup migration revealed low rates after 2 years and suggested a stable postoperative implant position. |
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Language
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English
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Source (journal)
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Archives of orthopaedic and trauma surgery. - Berlin, 1988, currens
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Publication
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New york
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Springer
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2021
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ISSN
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0936-8051
[print]
1434-3916
[online]
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DOI
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10.1007/S00402-020-03722-X
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Volume/pages
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141
(2021)
, p. 509-516
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ISI
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000601143600001
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Pubmed ID
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33354743
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Full text (Publisher's DOI)
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Full text (open access)
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