Chinese Journal Of Clinical Anatomy ›› 2017, Vol. 35 ›› Issue (1): 62-68.doi: 10.13418/j.issn.1001-165x.2017.01.013

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The high flexion kinematic characteristics research of Human tibiofemoral joint

WANG  Jian-ping1, LIANG Jun1, ZHANG Yan-ru2, FU Long1, WANG Meng1, ZHANG Pan-pan1   

  1. 1.School of Mechanical and Power Engineering,Polytechnic University,Jiaozuo,454000; 2.School of Medicine,Henan Polytechnic University,Jiaozuo,454000
  • Received:2016-01-24 Online:2017-01-25 Published:2017-02-22
  • Contact: ZHANG Yan-ru, E-mail:E-mail:153523419@qq.com

Abstract:

Objective  Analyzing the femorotibial (FT) joint kinematics of natural and artificial knees under high flexion behaviors provides a reference for the study of kinematic characteristics of knees and the prosthesis design. Method On the basis of the CT and MRI scanning data of healthy volunteers, dynamic finite element models (FEMs) of the human knee joint and total knee arthroplasty (TKA) were established. Through the loaded three-dimensional quadriceps asynchronous variable forces to simulation of the squatting exercise, our study analyzed the relative kinematic characteristics of FT articulation. Data in the relevant literature were retrieved and compared with our study for analyses.    Result Three-dimensional kinematicsdata of the femur relative to the tibia of human’s natural and TKA knees were obtained during the squatting.The results showed that the overall trends of the relative kinematics of the femorotibial articulation before and after TKA were similar. However, the maximums of the kinetic aspects in the anterior or posterior translation,proximal or distal translation, medial or lateral translation, adduction or abduction rotation,and internal or external rotation were different. Our study found varying degrees of differences in the results through analyzing the relative kinematics of intact and TKA knees’ FT articulation and  the existing relevant literature data. Conclusions  The main differences for nature knee relative kinematics are the changes in the level of restraints on the directions and the shifted flexion degrees of the knees’ FT joints.The differences for the TKA knee derive mainly from the knee-surface and structural changes; andboth of these differences are related to the definition of the coordinate system, in vitro or in vivo, and the various loads. This study has performed finite element simulation analyses for the kinematics of intact and TKA knees’ FT articulations , offering certain valuable references on the study of the knee kinematics.

Key words: Knee, Femorotibial articulations, Asynchronous variable forces, Relative kinematics, Total knee arthroplasty