title: Fatigue properties and stem subsidence in wire coil reinforced PMMA bone cement: a preliminary in vitro study.
abstract: The longevity of the cemented total hip joint replacement depends on the integrity of the cement fixation with respect to the interfaces of the metal stem and bone, and stress/strain transmission and its distribution. A simple stainless steel wire coil was placed around a tapered stem in a simulated cement mantle to counteract radial- and hoop-stress and dynamic compression-compression tests were performed. The results showed that the wire coil reinforced cement group had a higher fatigue (30%) and strength (35%) up to 10(5) loading cycles. The amount of stem subsidence during fatigue tests of the wire reinforced group was significantly reduced (2.5 times) compared with the control group.
authors.affiliation: Department of Biomedical Engineering, College of Engineering, University of Iowa, Iowa, City 52242, USA.
authors.forename: J K
authors.initials: JK
authors.lastname: Kim
authors.forename: J B
authors.initials: JB
authors.lastname: Park
mesh_terms: D001843:Bone Cements / Q000737:chemistry*; D001842:Bone and Bones / Q000502:physiology; D002484:Cementation; D019245:Compressive Strength; D004548:Elasticity; D006622:Hip Prosthesis; D006801:Humans; D016014:Linear Models; D008422:Materials Testing / Q000295:instrumentation; D008768:Methylmethacrylates / Q000737:chemistry*; D011474:Prosthesis Design; D011475:Prosthesis Failure; D013193:Stainless Steel / Q000737:chemistry*; D013314:Stress, Mechanical; D013499:Surface Properties; D014783:Viscosity
chemical_list: D001843:Bone Cements; D008768:Methylmethacrylates; D013193:Stainless Steel