Title of article :
The purpose of this study was to determine if the repeatability and pattern of elbow kinematics are affected by changing the relative magnitudes of loads applied to muscles around the elbow in vitro. In eight cadaveric upper extremities, passive and three
Author/Authors :
C Bertolotti، نويسنده , , V Deplano، نويسنده , , J Fuseri، نويسنده , , P Dupouy، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2001
Abstract :
By means of both experimental and finite element methods, we simulated three-dimensional unsteady flows through coronory bypass anastomosis. The host artery includes a stenosis shape located at two different distances of grafting. The inflow rates are issued from in vivo measurements in patients who had undergone coronary bypass surgery a few days before. We provide a comparison between experimental and numerical velocity profiles coupled with the numerical analysis of spatial and temporal wall shear stress evolution. The interaction between the graft and coronary flows has been demonstrated. The phase inflow difference can partly be responsible for specific flow phenomena: jet deflection towards a preferential wall or feedback phenomenon that causes the flapping of the post-stenotic jet during the cardiac cycle. In conclusion, we showed the sensitivity of these typical flows to distance of grafting, inflows waveforms but also to their phase difference.
Keywords :
Coronary bypass , Experimental modeling , Finite element , In vivo data , Wall shear stress , Stenosis
Journal title :
Journal of Biomechanics
Journal title :
Journal of Biomechanics