caa a22 4500 605460817 CHVBK 20210128100240.0 cr unu---uuuuu 210128e20151101xx s 000 0 eng 10.1007/s00167-014-3144-9 doi (NATIONALLICENCE)springer-10.1007/s00167-014-3144-9 A 3D finite element model to investigate prosthetic interface stresses of different posterior tibial slope [Elektronische Daten] [Yi Shen, Xiaomiao Li, Xiaodong Fu, Weili Wang] Purpose: Posterior tibial slope that is created during proximal tibial resection in total knee arthroplasty has emerged as an important factor in the mechanics of the knee joint and the surgical outcome. But the ideal degree of posterior tibial slope for recovery of the knee joint function and preventions of complications remains controversial and should vary in different racial groups. The objective of this paper is to investigate the effects of posterior tibial slope on contact stresses in the tibial polyethylene component of total knee prostheses. Methods: Three-dimensional finite element analysis was used to calculate contact stresses in tibial polyethylene component of total knee prostheses subjected to a compressive load. The 3D finite element model of total knee prosthesis was constructed from the images produced by 3D scanning technology. Stresses in tibial polyethylene component were calculated with four different posterior tibial slopes (0°, 3°, 6° and 9°). Results: The 3D finite element model of total knee prosthesis we presented was well validated. We found that the stress distribution in the polythene as evaluated by the distributions of the von Mises stress, the maximum principle stress, the minimum principle stress and the Cpress were more uniform with 3° and 6° posterior tibial slopes than with 0° and 9° posterior tibial slopes. Moreover, the peaks of the above stresses and trends of changes with increasing degree of knee flexion were more ideal with 3° and 6° posterior slopes. Conclusions: The results suggested that the tibial component inclination might be favourable to 7°-10° so far as the stress distribution is concerned. The range of the tibial component inclination also can decrease the wear of polyethylene. Chinese posterior tibial slope is bigger than in the West, and the current domestic use of prostheses is imported from the West, so their demands to tilt back bone cutting can lead to shorten the service life of prostheses; this experiment result is of important clinical significance, guiding orthopaedic surgeon after the best angle to cut bone. Springer-Verlag Berlin Heidelberg, 2014 Posterior tibial slope nationallicence Polyethylene nationallicence Total knee arthroplasty nationallicence Knee prosthesis nationallicence Finite element analysis nationallicence Shen Yi Department of Orthopaedic, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 1630 DongFang Road, 200127, Shanghai, China aut Li Xiaomiao Department of Orthopaedic, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 1630 DongFang Road, 200127, Shanghai, China aut Fu Xiaodong Department of Orthopaedic, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 1630 DongFang Road, 200127, Shanghai, China aut Wang Weili Department of Orthopaedic, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 1630 DongFang Road, 200127, Shanghai, China aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/11(2015-11-01), 3330-3336 0942-2056 23:11<3330 2015 23 167 https://doi.org/10.1007/s00167-014-3144-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00167-014-3144-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shen Yi Department of Orthopaedic, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 1630 DongFang Road, 200127, Shanghai, China aut NATIONALLICENCE 700 1- Li Xiaomiao Department of Orthopaedic, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 1630 DongFang Road, 200127, Shanghai, China aut NATIONALLICENCE 700 1- Fu Xiaodong Department of Orthopaedic, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 1630 DongFang Road, 200127, Shanghai, China aut NATIONALLICENCE 700 1- Wang Weili Department of Orthopaedic, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 1630 DongFang Road, 200127, Shanghai, China aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/11(2015-11-01), 3330-3336 0942-2056 23:11<3330 2015 23 167