•The Effect of Peg vs. Keel Fixation on Micromotion of Cementless Tibial Baseplates
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چکیده
INTRODUCTION: Initial implant stability is crucial to cementless knee replacement success, however the optimal design remains elusive. Previous biomechanical studies have aimed at quantifying initial stability using simplified loading scenarios. The objective of this study was to use a physiological relevant methodology which incorporates torsion, shear and compression forces to evaluate tibial components with two different fixation features, a full keel and two 0.5 inch diameter cylindrical pegs.
منابع مشابه
Micromotion of cementless tibial baseplates under physiological loading conditions.
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 s...
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INTRODUCTION: Cementless tibial fixation has been used for over 30 years. There are several potential advantages including preservation of bone stock and ease of revision [1]. More importantly, particularly for younger, more active patients, there is the potential for increased longevity of the fixation. However, the clinical results with cementless fixation have been variable, with reports of ...
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Introduction: Cementless tibial fixation has been used for over 30 years in total knee arthroplasty. There are several potential advantages including preservation of bone stock and ease of revision. More importantly, for young active patients there is the potential for increased longevity of fixation. However, the clinical results have been variable, with reports of extensive radiolucent lines,...
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تاریخ انتشار 2010