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International Orthopaedics
Published in: International Orthopaedics 9/2015

01-09-2015 | Original Paper

High failure rate of a new pressfit cup in mid-term follow-up

Authors: Steffen Brodt, Georg Matziolis, Christoph Windisch, Andreas Gosse, Matthias Spalteholz, Ralf Herbert Gahr

Published in: International Orthopaedics | Issue 9/2015

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Abstract

Background

Unacceptably high rates of loosening of a novel cementless cup system (Mathys, SeleXys TH+) have been reported. In this study, our mid-term-results with the SeleXys TH+ cup are compared with an established pressfit cup (Ceraver, Cerafit-R).

Methods

Between 2008 and 2011, a total of 407 implantations, 19 of them bilaterally, were conducted on 388 patients with the implants in question. A total of 280 cups were available for follow-up. Of these, 160 SeleXys TH+ cups and 120 Cerafit-R cups had been used.

Results

The mean follow-up period was 48.6 months (min. 28, max. 75). A total of 18 cases of loosening were found in the SeleXys TH+ group. Of these, one was of a traumatic nature and one was of septic origin. This left 16 cases of aseptic, atraumatic loosening (10 % loosening rate). In the Cerafit-R group, only two cases (1.7 %) of loosening were seen over the same period. Both were of traumatic origin. No cases of aseptic, atraumatic loosening were seen in the follow-up period. Further, significantly more cases of loosening were observed in women than in men with the SeleXys cup.

Conclusions

The SeleXys TH+ cup shows an unacceptably high failure rate after six years. The time of revision is not limited to the first months after implantation, which means that close clinical and radiological controls will continue to be necessary in future in patients treated with SeleXys TH+ cups.
Level of Evidenve: III (retrospective cohort study)
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Metadata
Title
High failure rate of a new pressfit cup in mid-term follow-up
Authors
Steffen Brodt
Georg Matziolis
Christoph Windisch
Andreas Gosse
Matthias Spalteholz
Ralf Herbert Gahr
Publication date
01-09-2015
Publisher
Springer Berlin Heidelberg
Published in
International Orthopaedics / Issue 9/2015
Print ISSN: 0341-2695
Electronic ISSN: 1432-5195
DOI
https://doi.org/10.1007/s00264-015-2872-x

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