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- W3147841298 abstract "Objective:To discuss the primary stability of the fixed interface between the cementless prosthesis and femur, and its influence on bone ingrowth and secondary stability under the roughened surface and press fit of different prostheses by finite element analysis. Methods:A three dimensional finite element module of total hip arthroplasty(THA) was developed with Mimics software. There was a collection of data when simulating hip arthroplasty. The frictional coefficient between the fixed interface was 0,0.15,0.40 and 1.00 representing the roughness of prosthesis surface. The press fit was 0,0.01,0.05 and 0.10 mm according to the operation. The Vion Mises stress distribution and the contact pressure,friction stress and relative sliding displacement between the interface were analysed and compared when simulating the maneuver of climbing stairs. Results:At a fixed press fit of 0.05 mm,the contact pressure between the interface was 230,231,222 and 275 MN under four different frictional coefficient(0,0.15,0.40 and 1.00) with little change; the relative sliding displacement was 0.529,0.129,0.107 and 0.087 mm with a consistent and obvious decline. As the fixed frictional coefficient was 0.40,the contact pressure between the interface were 56.0,67.7,60.4 and 49.6 MN under four different press fit(0,0.01,0.05 and 0.10 mm) with a reduction; the relative sliding displacement was 0.064,0.062,0.043 and 0.042 mm with an obvious decline,and there was a maximal friction stress when press fit of 0.01 mm. Conclusion:There is a dynamic process of the bone remodeling and bone integration between the interface after hip replacement,determining the long term outcome. The interface clearance and the frictional coefficient are the key factors of the bone integration." @default.
- W3147841298 created "2021-04-13" @default.
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- W3147841298 date "2014-01-01" @default.
- W3147841298 modified "2023-09-26" @default.
- W3147841298 title "Three dimensional finite element analysis on mechanical behavior of the bone remodeling and bone integration between the bone implant interface after hip replacement" @default.
- W3147841298 hasPublicationYear "2014" @default.
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