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Published in: International Orthopaedics 8/2018

01-08-2018 | Original Paper

Clinical and radiological outcomes of trabecular metal systems and antiprotrusion cages in acetabular revision surgery with severe defects: a comparative study

Authors: Irene Isabel López-Torres, Pablo Sanz-Ruíz, Coral Sánchez-Pérez, Ricardo Andrade-Albarracín, Javier Vaquero

Published in: International Orthopaedics | Issue 8/2018

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Abstract

Introduction

Acetabular revision surgery poses a challenge due to the increased frequency of severe defects and poor quality of the remaining bone. We compare the clinical and radiological outcomes, complications, and survival of two systems commonly used in complex acetabular revisions (AAOS types II, III, and IV): trabecular metal system (TM) and Burch-Schneider antiprotrusion cages (BS).

Methods

Eighty-four patients underwent acetabular revision surgery with TM or BS in our centre between 2008 and 2014. Comparison was made of demographic and clinical characteristics, satisfaction, radiographic parameters, complications, and survival of the implants. A BS was implanted in 30.9% of the patients, while 69.1% received a TM implant. The mean follow-up was 4.77 years.

Results

The BS group required a significantly greater number of constrained implants (p = 0.001) and more walking aids (p = 0.04). The mean satisfaction (p = 0.02) and HHS scores at the end of the follow-up were higher in the TM group (p = 0.003). No differences were observed in the incidence of complications, though the only two cases of implant rupture corresponded to the BS group. The overall survival rate was 88.1% after 7.5 years.

Conclusion

TM implants afforded better clinical outcomes and greater patient satisfaction than antiprotrusion cages in the treatment of severe acetabular defects.
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Metadata
Title
Clinical and radiological outcomes of trabecular metal systems and antiprotrusion cages in acetabular revision surgery with severe defects: a comparative study
Authors
Irene Isabel López-Torres
Pablo Sanz-Ruíz
Coral Sánchez-Pérez
Ricardo Andrade-Albarracín
Javier Vaquero
Publication date
01-08-2018
Publisher
Springer Berlin Heidelberg
Published in
International Orthopaedics / Issue 8/2018
Print ISSN: 0341-2695
Electronic ISSN: 1432-5195
DOI
https://doi.org/10.1007/s00264-018-3801-6

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