Influence of post-cam design of posterior stabilized knee prosthesis on tibiofemoral motion during high knee flexion

2011 ◽  
Vol 26 (8) ◽  
pp. 847-852 ◽  
Author(s):  
Kun-Jhih Lin ◽  
Chang-Hung Huang ◽  
Yu-Liang Liu ◽  
Wen-Chuan Chen ◽  
Tsung-Wei Chang ◽  
...  
Keyword(s):  
Knee Flexion ◽  
Knee Prosthesis ◽  
Posterior Stabilized ◽  
Cam Design

scholarly journals Kinematic Comparison between Medially Congruent and Posterior-Stabilized Third-Generation TKA Designs

2021 ◽  
Vol 6 (1) ◽  
pp. 27
Author(s):  
Stefano Ghirardelli ◽  
Jessica L. Asay ◽  
Erika A. Leonardi ◽  
Tommaso Amoroso ◽  
Thomas P. Andriacchi ◽  
...  
Keyword(s):  
Knee Flexion ◽  
Knee Kinematics ◽  
Primary Total Knee Arthroplasty ◽  
Flexion Angle ◽  
Heel Strike ◽  
Third Generation ◽  
Knee Flexion Angle ◽  
Posterior Stabilized ◽  
Rotational Angle ◽  
Peak Knee

Background: This study compares knee kinematics in two groups of patients who have undergone primary total knee arthroplasty (TKA) using two different modern designs: medially congruent (MC) and posterior-stabilized (PS). The aim of the study is to demonstrate only minimal differences between the groups. Methods: Ten TKA patients (4 PS, 6 MC) with successful clinical outcomes were evaluated through 3D knee kinematics analysis performed using a multicamera optoelectronic system and a force platform. Extracted kinematic data included knee flexion angle at heel-strike (KFH), peak midstance knee flexion angle (MSKFA), maximum and minimum knee adduction angle (KAA), and knee rotational angle at heel-strike. Data were compared with a group of healthy controls. Results: There were no differences in preferred walking speed between MC and PS groups, but we found consistent differences in knee function. At heel-strike, the knee tended to be more flexed in the PS group compared to the MC group; the MSKFA tended to be higher in the PS group compared to the MC group. There was a significant fluctuation in KAA during the swing phase in the PS group compared to the MC group, PS patients showed a higher peak knee flexion moment compared to MC patients, and the PS group had significantly less peak internal rotation moments than the MC group. Conclusions: Modern, third-generation TKA designs failed to reproduce normal knee kinematics. MC knees tended to reproduce a more natural kinematic pattern at heel-strike and during axial rotation, while PS knees showed better kinematics during mid-flexion.

Intraoperative kinematic analysis of posterior stabilized total knee arthroplasty with asymmetric helical post-cam design

2018 ◽  
Vol 29 (3) ◽  
pp. 675-681 ◽  
Author(s):  
Takatoshi Morooka ◽  
Makiko Okuno ◽  
Daisuke Seino ◽  
Takuya Iseki ◽  
Shigeo Fukunishi ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Kinematic Analysis ◽  
Posterior Stabilized ◽  
Cam Design ◽  
Total Knee

Insall - Burstein Posterior Stabilized Knee Prosthesis - Preliminary Report -

1983 ◽  
Vol 18 (6) ◽  
pp. 1148
Author(s):  
Dae Kyung Bae ◽  
Young Kwon Kim ◽  
Sang Wook Bae ◽  
Young Ryong Kim ◽  
Chung O Kim
Keyword(s):  
Preliminary Report ◽  
Knee Prosthesis ◽  
Posterior Stabilized

scholarly journals An improved above-knee prosthesis with functional versatility

1982 ◽  
Vol 6 (3) ◽  
pp. 157-160 ◽  
Author(s):  
K. K. Chaudhry ◽  
S. K. Guha ◽  
S. K. Verma
Keyword(s):  
Knee Flexion ◽  
Knee Prosthesis ◽  
Ankle Dorsiflexion ◽  
Asian Countries ◽  
Linkage Mechanism ◽  
Rotation System ◽  
Functional Versatility ◽  
Flexion And Extension

An above-knee prosthesis is described which is designed to permit the patient to assume easily the squatting and sitting cross legged postures which are a part of routine living in Afro-Asian countries. The prosthesis incorporates a multibar linkage mechanism which co-ordinates knee flexion and extension with ankle dorsiflexion and plantarflexion, and a thigh rotation system fitted at the level of the knee axis.

Early Nontraumatic Fracture of the Polyethylene Tibial Post in a NexGen LPS-Flex Posterior Stabilized Knee Prosthesis

2009 ◽  
Vol 24 (8) ◽  
pp. 1292.e5-1292.e9 ◽  
Author(s):  
Chi-Sheng Lee ◽  
Wei-Ming Chen ◽  
Hung-Chan Kou ◽  
Wai-Hee Lo ◽  
Chien-Lung Chen
Keyword(s):  
Knee Prosthesis ◽  
Posterior Stabilized ◽  
Tibial Post

scholarly journals Modelling and Analysis on Biomechanical Dynamic Characteristics of Knee Flexion Movement under Squatting

2014 ◽  
Vol 2014 ◽  
pp. 1-14 ◽  
Author(s):  
Jianping Wang ◽  
Kun Tao ◽  
Huanyi Li ◽  
Chengtao Wang
Keyword(s):  
Knee Flexion ◽  
Soft Tissues ◽  
Knee Prosthesis ◽  
Three Dimensional ◽  
Experimental System ◽  
Dynamic Contact ◽  
Internal Stresses ◽  
Fe Model ◽  
Total Knee

The model of three-dimensional (3D) geometric knee was built, which included femoral-tibial, patellofemoral articulations and the bone and soft tissues. Dynamic finite element (FE) model of knee was developed to simulate both the kinematics and the internal stresses during knee flexion. The biomechanical experimental system of knee was built to simulate knee squatting using cadaver knees. The flexion motion and dynamic contact characteristics of knee were analyzed, and verified by comparing with the data from in vitro experiment. The results showed that the established dynamic FE models of knee are capable of predicting kinematics and the contact stresses during flexion, and could be an efficient tool for the analysis of total knee replacement (TKR) and knee prosthesis design.

In-vivo kinematics of high-flex posterior-stabilized total knee prosthesis designed for Asian populations

2016 ◽  
Vol 40 (11) ◽  
pp. 2295-2302 ◽  
Author(s):  
Toshifumi Watanabe ◽  
Takeshi Muneta ◽  
Hideyuki Koga ◽  
Masafumi Horie ◽  
Tomomasa Nakamura ◽  
...  
Keyword(s):  
Knee Prosthesis ◽  
Posterior Stabilized ◽  
Total Knee Prosthesis ◽  
In Vivo Kinematics ◽  
Asian Populations ◽  
Total Knee
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