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- W2392463913 abstract "Objective The purpost of this study was by three dimension limit element analysis to analysis stress distribution at interface of femur prostheses-cement and whether it being affected by variety of orientation of acetabular component.Material and Metheds The three dimension model of hip prosthesis was set up with three dimension limit element analysis software according to its design figure.Forces were applied to the head of the femur component at different abduction angle of aceatbular component (about5°,25°,45°,65°,85°respectively),and its magnitudes and directions were in according with the rdsults got from Lenfsfeld'test.The stress at prosthesis-cement interafce at different abduction angle of acetabular component was calculated with the Ansys 5.6 software.Results The stress was distributed asymmetrically at prosthesis-cement interafce,the value of which was the higest (so called peak value stress or main stress)at the beginning of femur component body and descended abruptly and then gradually from cranial to caudial position of proximal femur.The peak value stress was the lowest at the 45°abduction of acetabular component ,then rose with the increase or reduction of abduction angle,At extremity of femur component,medial and lateral stress value were both decreased with the increase of abduction angle of acetabular component and the variation of alteral stress was more obvious .Conclusions The stress is distributed asymmetrically at prosthesis-cement interafce.The highest stress is so-called peak value stress which comes forth at beginning of femur component where both the prosthesis and the bone cement crack easily because of high value stress.The peak value stress is lowest at the 45°abduction of acetabular component,then rises with the increase or rdeuction of abduction angle,which makes the cement and prosthesis to crack more easily and is disadvantage to the stabilization of femur component.At the extremity of femur component,medial and alteral stress value are all augmented with the increase of abduction angle of acetabular component,which accelerates the cement around it to worm and in the same way is disadvantage to the stabilization of femur component." @default.
- W2392463913 created "2016-06-24" @default.
- W2392463913 creator A5054925114 @default.
- W2392463913 date "2003-01-01" @default.
- W2392463913 modified "2023-09-26" @default.
- W2392463913 title "The affect of various acetabular prosthesis orientation on stress distribution at interface between femur prosthesis and cement—three dimension analysis" @default.
- W2392463913 hasPublicationYear "2003" @default.
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