کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4060921 | 1604028 | 2012 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Micromotion of Cementless Tibial Baseplates Under Physiological Loading Conditions Micromotion of Cementless Tibial Baseplates Under Physiological Loading Conditions](/preview/png/4060921.png)
Initial implant stability is crucial to cementless knee arthroplasty success. The objective of this study was to develop a physiological relevant methodology that incorporates torsion, shear, and compression forces to evaluate two tibial component designs that feature either a keel or cylindrical porous metal pegs. The data were compared with a simplified compression loading scenario. Results show a loading profile that combines compressive, shear, and torsional loads results in significantly larger motions than occur when loading in compression only. When comparing between a keeled and a pegged device, the new method shows significant differences in tibial component subsidence/liftoff at the anterior and posterior locations, which were lacking in the simplified test model. To accurately assess implant stability, studies should use physiological relevant loading.
Journal: The Journal of Arthroplasty - Volume 27, Issue 4, April 2012, Pages 648–654