Analysis of Contact Stress at the Postcam Mechanism in Posterior Stabilized Total Knee Arthroplasty

2007 ◽  
Vol 22 (2) ◽  
pp. 313
Author(s):  
Shuichi Matsuda ◽  
Yukio Akasaki ◽  
Hiromasa Miura ◽  
Hidehiko Higaki ◽  
Ken Okazaki ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Contact Stress ◽  
Knee Arthroplasty ◽  
Posterior Stabilized ◽  
Total Knee

Effect of post-cam design on the kinematics and contact stress of posterior-stabilized total knee arthroplasty

2021 ◽  
pp. 1-10
Author(s):  
Jin-Ah Lee ◽  
Yong-Gon Koh ◽  
Kyoung-Tak Kang
Keyword(s):  
Finite Element ◽  
Total Knee Arthroplasty ◽  
Contact Stress ◽  
Knee Arthroplasty ◽  
Gait Cycle ◽  
Three Dimensional ◽  
Posterior Stabilized ◽  
Cam Mechanism ◽  
Total Knee ◽  
Tibial Translation

BACKGROUND: The post-cam mechanism in the posterior-stabilized (PS) implant plays an important role, such as durability and kinematic performances, in total knee arthroplasty (TKA). OBJECTIVE: The purpose of this study was to evaluate the difference in the kinematics and contact stress of five post-cam designs, which are flat-and-flat, curve-and-curve (concave), curve-and-curve (concave and convex), helical, and asymmetrical post-cam designs, using three-dimensional finite element models. METHODS: We designed the post-cam model with five different geometries. The kinematics, contact stress, and contact area were evaluated in the five post-cam designs under gait cycle loading conditions using the finite element method. RESULTS: There were no differences in the contact stress and area on the tibial insert in all designs. The largest internal rotation was shown in the swing phase for the helical design, and the largest tibial posterior translation was observed for the curve-and-curve (concave) design. The curve-and-curve (concave) design showed the lowest contact stress and the largest posterior tibial translation during the gait cycle. CONCLUSIONS: Considering the kinematics and contact stress, we found that the curve-and-curve (concave) design was more stable than other designs. From the results, we found the important factors of TKA implant considering stability and kinematics.

Contact Stress Analysis of the Conforming Post-Cam Mechanism in Posterior-Stabilized Total Knee Arthroplasty

2008 ◽  
Vol 23 (5) ◽  
pp. 736-743 ◽  
Author(s):  
Yukio Akasaki ◽  
Shuichi Matsuda ◽  
Takeshi Shimoto ◽  
Hiromasa Miura ◽  
Hidehiko Higaki ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Stress Analysis ◽  
Contact Stress ◽  
Knee Arthroplasty ◽  
Posterior Stabilized ◽  
Cam Mechanism ◽  
Total Knee

scholarly journals Biomechanical Effects of Posterior Condylar Offset and Posterior Tibial Slope on Quadriceps Force and Joint Contact Forces in Posterior-Stabilized Total Knee Arthroplasty

2017 ◽  
Vol 2017 ◽  
pp. 1-12 ◽  
Author(s):  
Kyoung-Tak Kang ◽  
Yong-Gon Koh ◽  
Juhyun Son ◽  
Oh-Ryong Kwon ◽  
Jun-Sang Lee ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Contact Stress ◽  
Knee Arthroplasty ◽  
Tibial Slope ◽  
Posterior Stabilized ◽  
Posterior Condylar Offset ◽  
Posterior Tibial ◽  
Posterior Condylar ◽  
Total Knee ◽  
Quadriceps Force

This study aimed to determine the biomechanical effect of the posterior condylar offset (PCO) and posterior tibial slope (PTS) in posterior-stabilized (PS) fixed-bearing total knee arthroplasty (TKA). We developed ±1, ±2, and ±3 mm PCO models in the posterior direction and −3°, 0°, 3°, and 6° PTS models using a previously validated FE model. The influence of changes in the PCO and PTS on the biomechanical effects under deep-knee-bend loading was investigated. The contact stress on the PE insert increased by 14% and decreased by 7% on average as the PCO increased and decreased, respectively, compared to the neutral position. In addition, the contact stress on post in PE insert increased by 18% on average as PTS increased from −3° to 6°. However, the contact stress on the patellar button decreased by 11% on average as PTS increased from −3° to 6° in all different PCO cases. The quadriceps force decreased by 14% as PTS increased from −3° to 6° in all PCO models. The same trend was found in patellar tendon force. Changes in PCO had adverse biomechanical effects whereas PTS increase had positive biomechanical effects. However, excessive PTS should be avoided to prevent knee instability and subsequent failure.

Femorotibial kinematics and load patterns after total knee arthroplasty: An in vitro comparison of posterior-stabilized versus medial-stabilized design

2016 ◽  
Vol 33 ◽  
pp. 42-48 ◽  
Author(s):  
Arnd Steinbrück ◽  
Christian Schröder ◽  
Matthias Woiczinski ◽  
Andreas Fottner ◽  
Vera Pinskerova ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Posterior Stabilized ◽  
Total Knee ◽  
In Vitro Comparison

Spontaneous dislocation of a mobile-bearing polyethylene insert after posterior-stabilized rotating platform total knee arthroplasty: A case report

The Knee ◽  
2011 ◽  
Vol 18 (6) ◽  
pp. 496-498 ◽  
Author(s):  
Hideo Kobayashi ◽  
Yasushi Akamatsu ◽  
Naoya Taki ◽  
Hirohiko Ota ◽  
Naoto Mitsugi ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Case Report ◽  
Knee Arthroplasty ◽  
Mobile Bearing ◽  
Polyethylene Insert ◽  
Posterior Stabilized ◽  
Rotating Platform ◽  
Total Knee

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
Sign in / Sign up

Export Citation Format

Share Document