Early Results of a New Rotating Hinge Knee ImplantReport as inadecuate

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BioMed Research International - Volume 2014 2014, Article ID 948520, 8 pages -

Clinical Study

Department of Orthopaedics, Vienna General Hospital, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria

Department of Traumatology and Orthopaedics, St. Vincenz Hospital Am Stein 24, 58706 Menden, Germany

The Rhine-Main Center of Joint Diseases, Wilhelmstraße 30, 65183 Wiesbaden, Germany

Received 5 May 2014; Revised 7 June 2014; Accepted 10 June 2014; Published 25 June 2014

Academic Editor: Thomas M. Grupp

Copyright © 2014 Alexander Giurea et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Background. Indication for rotating hinge RH total knee arthroplasty TKA includes primary and revision cases, with contradictory results. The aim of this study was to report prospective early results of a new modular rotating hinge TKA EnduRo. For this implant several new design features and a new bearing material carbon-fiber reinforced poly-ether-ether-ketone have been developed. Furthermore, we tried to establish a new classification of failure modes for revision TKA. Methods. 152 EnduRo rotating-hinge prostheses were implanted in two centers. In 90 patients a primary implantation has been performed and 62 patients were revision cases. Knee Society Score KSS, Western Ontario and McMaster Osteoarthritis Index WOMAC, Oxford Knee Score OKS, and Range of motion ROM were assessed before surgery, 3 months postoperatively, 12 months postoperatively, and annually thereafter. We defined 3 types of complications: Type 1, infection; type 2, periprosthetic complications; type 3, implant failures. Results. KSS, WOMAC, OKS, and ROM revealed significant improvements between the preoperative and the follow-up investigations. There were 14 complications 9.2% leading to revision surgery, predominantly type 2. Conclusion. Our study shows excellent clinical results of the EnduRo TKA. Furthermore, no premature material failure or unusual biological response to the new bearing material could be detected.

Author: Alexander Giurea, Hans-Joachim Neuhaus, Rolf Miehlke, Reinhard Schuh, Richard Lass, Bernd Kubista, and Reinhard Windhager

Source: https://www.hindawi.com/


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