Finite Element Method To Evaluate Effects Of Hip Implant Geometry On Bone Cement Stress Distribution
PROCEEDING OF THE ASME SUMMER BIOENGINEERING CONFERENCE - 2007(2007)
Abstract
Loosening of cemented hip prostheses has been reported on occasion. Although a few laboratory experiments have replicated clinical failure modes, the methods appear to be very complicated and time consuming. In this analysis, the Finite Element Method was utilized to evaluate the stress distribution in a cement layer. Two distinct hip implant designs with and without grooves in the anterior/posterior surfaces were investigated. The results indicate that the features of the Multiple grooves in these cemented hip implants may improve the rotational stability and reduce the cement stress at the implant-cement interface.
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Key words
stress concentration,geometry,finite element methods
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