The ability of tibial tray component shapes to appropriately fit boney geometry is an important aspect of implant design in total knee arthroplasty. Overhang of components in the knee has been associated with soft tissue damage and joint pain [1,2]. Good coverage establishes stability through adequate cortical bone support of the tray component, and reduces the likelihood of loosening and subsidence [3–5], and therefore serves as a key factor in component fixation, especially in those that rely on biological growth into porous component backings such as Trabecular Metal™ Material. More importantly, rotational malalignment of the tibial tray can disrupt the natural kinematics and implant longevity [6]. Previous studies investigated coverage of multiple tibial trays on digitized bone resection contours [1,7]. However the methodology for rotational alignment during implantation was not identified. Although rotational alignment has been investigated in numerous studies, most of the studies were carried out by either investigating the impact of malalignment [6], or assessing different definitions of the tibia rotational axis [8]. No correlation between the size of the rotational alignment window and the amount of coverage has been shown.
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ASME 2011 Summer Bioengineering Conference
June 22–25, 2011
Farmington, Pennsylvania, USA
Conference Sponsors:
- Bioengineering Division
ISBN:
978-0-7918-5458-7
PROCEEDINGS PAPER
Automated Virtual Placement and Evaluation of Tibial Components for Knee Arthroplasty
Mary S. S. Wentorf,
Mary S. S. Wentorf
Zimmer Inc., Warsaw, IN
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Jeffrey E. Bischoff
Jeffrey E. Bischoff
Zimmer Inc., Warsaw, IN
Search for other works by this author on:
Yifei Dai
Zimmer Inc., Warsaw, IN
Mary S. S. Wentorf
Zimmer Inc., Warsaw, IN
Jeffrey E. Bischoff
Zimmer Inc., Warsaw, IN
Paper No:
SBC2011-53244, pp. 381-382; 2 pages
Published Online:
July 17, 2013
Citation
Dai, Y, Wentorf, MSS, & Bischoff, JE. "Automated Virtual Placement and Evaluation of Tibial Components for Knee Arthroplasty." Proceedings of the ASME 2011 Summer Bioengineering Conference. ASME 2011 Summer Bioengineering Conference, Parts A and B. Farmington, Pennsylvania, USA. June 22–25, 2011. pp. 381-382. ASME. https://doi.org/10.1115/SBC2011-53244
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