Author:
Fang Chaohua,Luan Yichao,Wang Zhiwei,Shao Long,Qu Tiebing,Cheng Cheng-Kung
Abstract
This study aimed to investigate the influence of tibial malrotation on knee kinematics after total knee arthroplasty (TKA). A symmetric fixed-bearing posterior-stabilized prosthesis was implanted in the validated knee model with different rotational alignments of the tibial component (neutral, 3° external rotation, 5° external rotation, 3° internal rotation, and 5° internal rotation). Computational kinematic simulations were used to evaluate the postoperative kinematics of the knee joint including anteroposterior translation femoral condyles and axial rotation of tibial component during 0°–135° knee flexion. The results revealed that the neutral position of the tibial component was not the closest kinematics to the intact knee, the model with 5° external rotation of the tibial component showed the closest lateral condyle translation and tibial axial rotation, and moderate external rotation could improve the kinematics after TKA.
Funder
Department of Health of Zhejiang Province
Subject
Biomedical Engineering,Histology,Bioengineering,Biotechnology
Cited by
5 articles.
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