gms | German Medical Science

Deutscher Kongress für Orthopädie und Unfallchirurgie
74. Jahrestagung der Deutschen Gesellschaft für Unfallchirurgie
96. Tagung der Deutschen Gesellschaft für Orthopädie und Orthopädische Chirurgie
51. Tagung des Berufsverbandes der Fachärzte für Orthopädie und Unfallchirurgie

26. - 29.10.2010, Berlin

Cementless versus hybrid total knee arthroplasty – a case control study

Meeting Abstract

  • R. Lass - Universitätsklinik für Orthopädie, Medizinische Uiversität, Wien, Austria
  • M. Pfeiffer - Universitätsklinik für Orthopädie, Medizinische Uiversität, Wien, Austria
  • B. Kubista - Universitätsklinik für Orthopädie, Medizinische Uiversität, Wien, Austria
  • J. Holinka - Universitätsklinik für Orthopädie, Medizinsche Universität Wien, Austria
  • A. Giurea - Medizinische Universität Wien, Universitätsklinik f. Orthopädie, Wien, Austria
  • R. Kotz - Universitätsklinik für Orthopädie, Medizinische Uiversität, Wien, Austria

Deutscher Kongress für Orthopädie und Unfallchirurgie. 74. Jahrestagung der Deutschen Gesellschaft für Unfallchirurgie, 96. Tagung der Deutschen Gesellschaft für Orthopädie und Orthopädische Chirurgie, 51. Tagung des Berufsverbandes der Fachärzte für Orthopädie. Berlin, 26.-29.10.2010. Düsseldorf: German Medical Science GMS Publishing House; 2010. DocIN20-1618

DOI: 10.3205/10dkou122, URN: urn:nbn:de:0183-10dkou1222

Published: October 21, 2010

© 2010 Lass et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by-nc-nd/3.0/deed.en). You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.


Outline

Text

Objective: Cementless total knee arthroplasty (TKA) implants were designed to provide long-term fixation without the risk of cement-associated complications. The purpose of this study was to evaluate the outcome of titanium-coated cementless compared to hybrid fixed knee endoprosthesis using a cemented tibial and cementless femoral component.

Methods: We performed a case controlled, single center study including 145 TKAs. From 2003 to 2006, we implanted 55 cementless (group 1) and 90 hybrid fixed endoprostheses (group 2; control group). We analyzed the radiographic and clinical outcome, as well as survivorship of the cementless implants compared to the control group, at a mean follow-up of 3.5 years (minimum 2 years). The SPSS programm was used for statistical analyses.

Results and conclusions: 101 patients with 108 TKAs (74.5%) completed the two-year assessment. Knee Society Scores increased significantly in both the study group and the control group (p<0.001). In total, 9 revisions (8.3%) were required, 5 in the cementless group, 4 in the hybrid cemented group (p=0.345). In both groups, 2 revisions (p=0.701) were necessary due to loosening of the tibial tray. Radiological investigation showed a greater number of radiolucent lines around the tibial baseplate in the cemented (n=26) than in the cementless group (n=12) (p=0.005).

At two years postoperatively, there was no significant difference between cementless Plasmapore® titanium-coated and partially cemented TKA in terms of clinical and functional results and postoperative complications. In our opinion, the significantly smaller number of radiolucent lines in the cementless group is an important requirement for durable long-term fixations in TKA.