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5-Jahres-Ergebnisse der zementfreien Allofit®-Press-fit-Pfanne

Five-year survival rate of the Allofit titanium press-fit cup

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Zusammenfassung

Hintergrund

Die Allofit®-Titan-Press-fit-Pfanne ist mit ca. 30.000 verkauften Implantaten in 2007 die am häufigsten implantierte zementfreie Pfannenkomponente in Deutschland. Bisher liegen zur Allofit®-Press-fit-Pfanne lediglich Daten aus den Zentren in Österreich vor, die die Pfanne entwickelt haben.

Material und Methode

In den Jahren 1999–2000 wurden an unserer Klinik 174 Allofit®-Press-fit-Pfannen implantiert. Der Nachuntersuchungszeitraum beträgt 5,3 Jahre (40–85 Monate). Die Daten von 154 Patienten konnten klinisch und radiologisch ausgewertet werden. Dies ergibt eine Nachuntersuchungsrate von 89%.

Ergebnisse

Die 5-Jahres-Überlebensrate der Allofit®-Pfanne beträgt 98,1% (95%-KI=95,8–100,0%) mit Komponentenwechsel als Endpunkt. Drei Pfannen mussten gewechselt werden (eine bei aseptischer Lockerung, zwei aufgrund eines Infektes). Die Patienten, deren Pfanne nicht gewechselt worden war, erreichten einen Harris-Hip-Score von 89,1±13,7.

Schlussfolgerung

Unsere retrospektive Untersuchung belegt eine sehr gute mittelfristige Verankerung der Allofit®-Press-fit-Pfanne und unterstützt den weiteren klinischen Einsatz.

Abstract

Background

The Allofit titanium press-fit cup has become the best-selling cementless acetabular implant in Germany, with approximately 30,000 implants sold in 2007. However, only a limited number of scientific publications – mostly from the development centres in Austria – support this success on the market.

Methods

At our institution in 1999–2000, 174 total hip replacements were performed using the Allofit cementless press-fit cup. At a mean follow-up of 5.3 years (range 40–85 months), 154 patients were evaluated clinically and radiographically, representing a follow-up rate of 89%.

Results

The 5-year survival rate was 98.1% (95% CI: 95.8–100%), with revision for any reason as an end point. Three cups were revised (aseptic loosening with one, and two septic complications). The average Harris hip score was 89.1±13.7 in all unrevised patients.

Conclusion

We confirm the excellent survival rates of the Allofit cup as reported by the development centres, supporting the ongoing use of the cup at our institution.

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Authors and Affiliations

  1. Stiftung Orthopädische Universitätsklinik, Heidelberg, Deutschland

    K. Schroeder, A. Moehlenbruch, M. Zimmermann-Stenzel & D. Parsch

  2. Orthopädische Klinik Friedrichsheim, Marienburgerstraße 2, 60528, Frankfurt a.M., Deutschland

    K. Schroeder

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  1. K. Schroeder
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  2. A. Moehlenbruch
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  3. M. Zimmermann-Stenzel
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  4. D. Parsch
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Correspondence to K. Schroeder.

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Schroeder, K., Moehlenbruch, A., Zimmermann-Stenzel, M. et al. 5-Jahres-Ergebnisse der zementfreien Allofit®-Press-fit-Pfanne. Orthopäde 39, 87–91 (2010). https://doi.org/10.1007/s00132-009-1466-y

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