gms | German Medical Science

54. Jahrestagung der Norddeutschen Orthopädenvereinigung e. V.

Norddeutsche Orthopädenvereinigung

16.06. bis 18.06.2005, Hamburg

Mini-Invasive unicompartmental AMC-kneearthroplasty

Meeting Abstract

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  • corresponding author G. Bontemps - Department of Orthopaedic Surgery, Fabricius-Klinik Remscheid, Orthopädie, Remscheid
  • T. Tänzer - Düsseldorf

Norddeutsche Orthopädenvereinigung. 54. Jahrestagung der Norddeutschen Orthopädenvereinigung e.V.. Hamburg, 16.-18.06.2005. Düsseldorf, Köln: German Medical Science; 2005. Doc05novK2.04

The electronic version of this article is the complete one and can be found online at:

Published: June 13, 2005

© 2005 Bontemps et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.




The replacement of the medial compartment with the AMC-Uniglide prosthesis is possible through a small incision.

Has mini-invasive implantation a faster rehabilitation?

Exist differences in the clinical and radiological outcome by comparison to the standard open technique?


We followed and compared the outcome of 30 mini-invasive implanted prosthesis with 30 unicompartmental arthroplasties in standard open technique and 30 total knee arthroplasties. The rehabilitation time was measured for straight leg raising, knee flexion 90° and stair climbing.-The postoperative x-rays of both UCA groups were analyzed. Ten criteria were assessed at femur and tibia with a scoring system.-The knee and function score according to the Knee Society Rating System were registered preoperative and six months postoperative.


The mini-invasive group required 50% of the time, the standard implantation collective 75% of the time which was needed by the total knee arthroplasties. The analysis of the x-rays showed very similar results.

The Knee and Function Scores after 6 months gained equal progressivity in points.


Mini-invasive implantation of the AMC-Uniglide prosthesis accelerates rehabilitation considerable in comparison to standard open technique.

The analysis of the postoperative x-rays showed comparable good results for both UCA groups. This indicates that the instrumentation of the AMC-Uniglide enables a similar precise implantation for the mini-invasive technique as for standard open approach.

The clinical and functional results six months postoperative are equally good for both collectives.