In vitro fatigue behaviour of a cemented acetabular reconstruction.
In this study, a hemi-pelvis of composite sawbone was implanted with a Charnley cup using a conventional bone cement and the acetabular replacement was tested under constant amplitude cyclic loads, simulating the maximum hip contact force during normal walking. The damage development in the reconstruction was detected and monitored using CT scanning at regular test intervals, verified by microscopy post testing. Three identical experimental results showed that extensive debonding at the bone-cement interface occurred around the dome region after 20 million cycles.
Heaton-Adegbile
Phillip
P
Department of Mechanical and Design Engineering, University of Portsmouth, Anglesea Road, Anglesea Building, Portsmouth PO1 3DJ, UK.
Zant
Nikolaus P
NP
Tong
Jie
J
D001843:Bone Cements / Q000592:standards*; D018786:Bone Substitutes / Q000592:standards*; D019544:Equipment Failure Analysis / Q000295:instrumentation / Q000379:methods*; D006622:Hip Prosthesis / Q000592:standards*; D006801:Humans; D008853:Microscopy; D014057:Tomography, X-Ray Computed; D016138:Walking
D001843:Bone Cements; D018786:Bone Substitutes