Title :
The Influence of Changes in Patellar and Femoral Prosthesis on Knee Extensor Mechanism after TKA
Author :
He, Yujue ; Wang, Chengtao
Author_Institution :
Inst. of Life Quality, Jiao Tong Univ., Shanghai
Abstract :
In order to study the influence of some position changes of prosthesis in patello-femoral joint on knee mechanism after total knee arthroplasty, a three-dimensional model of knee joint including patello-femoral joint has been developed. Changes in position parameters of patellar or femoral prosthesis were simulated. Patellar lateral transition, ratio of patellar tendon force to quadriceps force, and ratio of patello-femoral compressive force to quadriceps force are choosing to response performances of knee extensor mechanics. Results show that patellar thickening, patellar medial rotation, lateral rotation and forward rotation of femoral prosthesis will all increase the patello-femoral compressive force. And patellar thickening, patellar medial rotation, medial rotation and forward rotation of femoral prosthesis will also result in increase of ratio of patellar tendon force to quadriceps. And patellar medial rotation, medial rotation and forward rotation of femoral prosthesis will result in increase of patellar lateral translation
Keywords :
biomechanics; prosthetics; TKA; femoral prosthesis; forward rotation; knee extensor mechanism; lateral rotation; patellar lateral transition; patellar medial rotation; patellar prosthesis; patellar tendon force; patellar thickening; patello-femoral compressive force; patello-femoral joint; quadriceps force; three-dimensional knee joint model; total knee arthroplasty; Assembly; Biological system modeling; Biological tissues; Computed tomography; Joints; Kinematics; Knee; Prosthetics; Surface topography; Tendons;
Conference_Titel :
Engineering in Medicine and Biology Society, 2005. IEEE-EMBS 2005. 27th Annual International Conference of the
Conference_Location :
Shanghai
Print_ISBN :
0-7803-8741-4
DOI :
10.1109/IEMBS.2005.1615906
