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German Congress of Orthopaedics and Traumatology (DKOU 2021)

26. - 29.10.2021, Berlin

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Strut onlay allograft in revision arthroplasty: osseous union and clinical outcome

Meeting Abstract

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  • presenting/speaker Alexander Wurm - Medizinische Universität Innsbruck, Orthopädie und Traumatologie, Innsbruck, Austria
  • Dietmar Dammerer - Medizinische Universität Innsbruck, Orthopädie und Traumatologie, Innsbruck, Austria
  • Clemens Frischut - Medizinische Universität Innsbruck, Innsbruck, Austria
  • Johannes Petersen - Medizinische Universität Innsbruck, Departement of Radiology, Innsbruck, Austria
  • Miar Ouaret - Medizinische Universität Innsbruck, Departement of Radiology, Innsbruck, Austria
  • Michael Liebensteiner - Medizinische Universität Innsbruck, Orthopädie und Traumatologie, Innsbruck, Austria

Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2021). Berlin, 26.-29.10.2021. Düsseldorf: German Medical Science GMS Publishing House; 2021. DocAB44-342

doi: 10.3205/21dkou240, urn:nbn:de:0183-21dkou2403

Published: October 26, 2021

© 2021 Wurm et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 License. See license information at http://creativecommons.org/licenses/by/4.0/.

Outline

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Objectives: To evaluate the clinical outcome and the osseous union of strut onlay allografts (SOAs) used as adjunct in revision total joint arthroplasty (TJA).

Methods: Patients that previously underwent SOA augmentation in revision TJA were considered for inclusion. Patients were invited to provide information for the following: 'Western Ontario and McMaster Universities Osteoarthritis Index' (WOMAC, 0 best, 100 worst), EQ-5D quality of life score (0 worst, 1 best) and Parker Mobility Score (0 worst, 9 best). Osseous union rates between SOA and the host bone were determined by radiograph with the Emerson classification system. In addition, the bone mineral density (BMD) was measured via quantitative computed tomography (QCT).

Results and Conclusion: Seventeen patients with an SOA during revision total joint arthroplasty were available at a mean follow-up of 2.8 (range: 0.5 - 12.0) years. The total WOMAC score was 22 ± 21. The EQ-5D showed a median score of 0.887 ± 0.350 (TTO). The Parker Mobility Score was 8.0 ± 3.5. Emerson stages of radiographic graft to host union were one 'rounding off', three 'partial bridging' and 13 'complete bridging'. QCT showed an average BMD of approximately 1300 mg/cm3.

From our findings it is concluded that SOAs used in revision TJA provide promising results and are recommended for broader clinical use. A complete osseous union between host and graft bone was observed in the majority of cases as well as the BMD of healthy cortical bone. Favorable findings for ambulatory status, quality of life and WOMAC scores further underline the procedure's potential.