Navigated Cementless Total Knee Arthroplasty - Medium-Term Clinical and Radiological Results§
Jan P Schüttrumpf *, 1, Peter Balcarek1, Stephan Sehmisch1, Stephan Frosch1, Martin M Wachowski1, Klaus M Stürmer1, Hans-Joachim Walde2, Tim A Walde1
1 Department of Trauma Surgery, Plastic and Reconstructive Surgery, University Medicine Göttingen, D-37099 Göttingen, Germany
2 Department of Traumatology, Hand and Reconstructive Surgery, Nordwest-Krankenhaus Sanderbusch, D-26452 Sande, Germany
The objective of this prospective study was to evaluate the medium-term clinical and radiological results after navigated cementless implantation, without patella resurfacing, of a total knee endoprosthesis with tibial and femoral press-fit components, with a focus on survival rate and clinical outcome. The innovation is the non-cemented fixation together with the use of a navigation system.
Scope and Methods:
Sixty patients with gonarthrosis were included consecutively in this study. In all cases, the cementless Columbus total knee endoprosthesis with a coating out of pure titanium was implanted, using a navigation system. The Knee Society Score showed a statistically significant increase from 75 (± 21.26) before surgery to 180 (± 16.15) after a mean follow-up of 5.6 (± 0.25) years. The last radiological examination revealed no osteolysis. No radiolucent lines were seen at any time in the area of the femoral prosthetic components. In the tibial area, radiolucent lines were seen in 24.4 % of the cases, mostly in the distal uncoated part of the stem. During follow-up, no prosthesis had to be replaced because of aseptic loosening while in 2 cases revision surgery was necessary due to septic loosening and in 1 case due to unexplainable pain.
Results and Conclusions:
Navigated cementless implantation of the Columbus total knee endoprosthesis yielded good clinical and radiological results in the medium term. The excellent radiological osteointegration of the prosthetic components, coated with a microporous pure titanium layer and implanted with a press-fit technique, should be emphasized.
Keywords: Cementless, clinical and radiological results, navigated, total knee arthroplasty.
open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
* Address correspondence to this author at the Department of Trauma Surgery, Plastic and Reconstructive Surgery, University Medicine Göttingen, Robert-Koch Straße 40, D-37099 Göttingen, Germany; Tel: +49-(0) 551-396114; Fax: +49-(0)551-398981; E-mail: firstname.lastname@example.org§The study was performed at the Department of Traumatology, Hand and Reconstructive Surgery, Nordwest-Krankenhaus Sanderbusch, Germany.