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Was gibt es Neues bei der medialen Gonarthrose? Der UniSpacer

What is new for medial gonarthritis? The UniSpacer

  • Leitthema
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Arthroskopie Aims and scope

Zusammenfassung

Die mediale Gonarthrose stellt eine häufige Indikation zur Prothesenversorgung dar. Verschiedene Faktoren nehmen Einfluss auf das gewählte Behandlungsverfahren. Bedingt durch die zu erwartenden Standzeiten der Implantate besteht Zurückhaltung bei der Anwendung des bikompartimentellen Gelenkersatzes bei jungen, aktiven Patienten. Daher wurde nach Verfahren gesucht, die auf eine Schmerzreduktion zielen und zeitgleich die spätere Rückzugsmöglichkeit auf eine Gelenkendoprothese eröffnen. Der UniSpacer wird als metallener Platzhalter für das mediale Gelenkkompartiment eingesetzt. Er gleitet unfixiert auf dem Tibiaplateau und soll die physiologische Biomechanik des Kniegelenks rekonstruieren. Die Indikationsstellung für den UniSpacer muss sorgfältig getroffen werden. Denn die tatsächliche Schmerzreduktion ist erwartungsgemäß geringer als bei einer Kniegelenkendoprothese. Die klinischen Ergebnisse zeigen in den bisherigen Studien relativ hohe Revisionsraten. Der Rückzug auf eine Endoprothese kann aber ohne Probleme durchgeführt werden.

Abstract

Medial knee arthritis is a common indication for a knee endoprosthesis. Various factors have an influence on the selection of the treatment procedure. Bicompartmental prostheses in young active patients are not recommended due to the expected survival time of the implant. Alternatives were evaluated which can reduce pain and at the same time preserve all options for knee prosthetics. The UniSpacer is a metal spacer for the medial compartment. The spacer is inserted unfixed into the medial tibial plateau with the aim of a reconstruction of the physiological biomechanics of the knee. Indications for this implant have to be chosen carefully. As expected pain relief is limited compared to endoprostheses; clinical studies have shown relatively high revision rates. Revision surgery to any other type of implant can be performed easily.

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Interessenkonflikt

Dr. Ellermann gibt an, dass die Studie von der Firma Zimmer® (Warsaw, USA) unterstützt wurde.

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Authors and Affiliations

  1. Arcus Sportklinik, Pforzheim, Rastatter Str. 17-19, 75179, Pforzheim, Deutschland

    A. Marx, R. Ossen &  A. Ellermann

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  1. A. Marx
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  2. R. Ossen
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  3. A. Ellermann
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Correspondence to A. Ellermann.

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Marx, A., Ossen, R. & Ellermann, A. Was gibt es Neues bei der medialen Gonarthrose? Der UniSpacer. Arthroskopie 22, 217–222 (2009). https://doi.org/10.1007/s00142-008-0486-7

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  • DOI: https://doi.org/10.1007/s00142-008-0486-7

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