|
KMID : 1137820160370060215
|
|
의공학회지
2016 Volume.37 No. 6 p.215 ~ p.221
|
|
|
The Correlation Analysis through the Contact Stress and the Curvature Radius according to Flexion Angle for the Design of Unicompartment Knee Replacement
|
|
Lee Yong-Kyung
Yoo Oui-Sik
Kim Jae-Won
Lim Do-Hyung
Jung Tae-Gon
Kim Jung-Sung
|
|
|
Abstract
|
|
|
|
Conformity between the femoral component and tibial insert within the knee replacement may be measured in frontal or sagittal view, and shows differences in the curvature radius of the femoral component depending on the flexion angle, i.e., curvature radius has a complex effect on contact stress. Therefore, it is essential to confirm how the curvature radius effects contact stress, and provide an important variable to reduce contact stress. This study correlated contact stress with curvature radius measured in frontal and the sagittal views and confirmed the effect of curvature radius for assessment of the Newly Designed Unicompartment Knee Replacement (NDUKR). Finite element models were constructed for NDUKR and Zimmer® Unicompartment High Flex Knee Replacement system (ZUKR), incorporating the curvature radius as measured in either frontal or sagittal view. The femoral component had 1200N of compressive load applied approximately 1.65xbody weight. Contact stress was predicted at flexion angles 0o, 30o, 60o, 90o and 120o, for NDUKR: 42, 47.7, 47.7, 51.2, and 54.1 MPa, and ZUKR: 41.2, 49.5, 53.2, 54.3, and 57.4 MPa, respectively. Correlation analysis showed the influence of curvature radius measured from the sagittal view was larger than for frontal view.
|
|
|
KEYWORD
|
|
|
Unicompartment Knee Replacement (UKR), Contact stress, Finite Element Method, Curvature Radius, Correlation Analysis
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
 
|
|