Pulsed lavage improves fixation strength of cemented tibial components

Publikationstyp
Conference Paper
Date Issued
2011-08-01
Sprache
English
Author(s)
Schlegel, Ulf Jens  
Siewe, Jan
Delank, Karl S.
Eysel, Peer
Püschel, Klaus  
Morlock, Michael  
Biomechanik M-3  
Gebert de Uhlenbrock, Anne  
Biomechanik M-3  
TORE-URI
https://hdl.handle.net/11420/46402
Journal
International orthopaedics  
Volume
35
Issue
8
Start Page
1165
End Page
1169
Citation
International Orthopaedics 35 (8): 1165-1169 (2011)
Publisher DOI
10.1007/s00264-010-1137-y
Scopus ID
2-s2.0-80555148778
Publisher
Springer
Pulsatile lavage is purported to improve radiographic survival in cemented total knee arthroplasty (TKA). Similarly, a potential improvement of fixation strength of the tibial tray has been assumed based on the increased cement penetration. In this study, the influence of pulsed lavage on fixation strength of the tibial component and bone cement penetration was evaluated in six pairs of cadaveric specimens. Following surgical preparation, the tibial surface was irrigated using pulsatile lavage on one side of a pair, while on the other side syringe lavage was applied. All tibial components were implanted using the same cementing technique. Cement penetration and bone mineral density was assessed based on computed tomography data. Fixation strength of the tibial trays was determined by a pull-out test with a material testing machine. Median pull-out forces and cement penetration were significantly (p=0.031) improved in the pulsed lavage group as compared to the syringe lavage group. Enhanced fixation strength is suggested as being a key to improved survival of the implant. Consequently, pulsatile lavage should be considered as a mandatory preparation step when cementing tibial components in TKA. © Springer-Verlag 2010.
DDC Class
610: Medicine, Health
620: Engineering