RT Journal Article ID 450c6e656767c102 A1 Krishnan, Ahilan Anantha A1 Ghyar, Rupesh A1 Ravi, Bhallamudi T1 Effect of Modularity on the Fatigue Performance of Tibial Tray Designs in TKA Prostheses JF Journal of Long-Term Effects of Medical Implants JO JLT YR 2016 FD 2016-08-01 VO 26 IS 1 SP 89 OP 95 K1 fatigue K1 tibial tray K1 total knee arthroplasty K1 modular prosthesis K1 fatigue safety factor K1 Cruciate retaining K1 posterior stabilized AB Fatigue performance of tibial tray in total knee arthroplasty (TKA) is of critical importance in terms of longevity of the prosthesis. Standards have been proposed by American Society for Testing and Materials (ASTM) and International Organization for Standardization (ISO) to ensure its long-term structural integrity. The aim of the current study is to evaluate the effect of modularity in the tibial tray following the testing standards, using finite element analysis. Goodman and Sines criteria were used to compare the fatigue safety factor (FSF) of four modular designs versus the two conventional designs. Cruciate-retaining (CR) type modular tibial tray designs were better than posterior-stabilized (PS) type tibial tray designs. More cutouts in the tray and absence of keel were reasons for poor fatigue performance. PB Begell House LK https://www.dl.begellhouse.com/journals/1bef42082d7a0fdf,02fc8faf6e9eaed6,450c6e656767c102.html