title: Porosity of neat and composite bone cement mantles.
abstract: The effect of fiber additions to bone cement on femoral cement mantle porosity was determined. Eighteen porcine femurs were implanted with a cemented prosthesis. Three cement types were used: as-received cement, cement with untreated polyethylene terephthalate fibers, and cement with treated polyethylene terephthalate fibers. Radiographs revealed all cement mantles as grade B, with slight radiolucency at the cement-bone interface. The cement mantles were sectioned at 7 levels, and porosity was measured at each level. All specimens had similar porosities, with an overall mean percentage of porosity of 3.3%+/-2.2% and a mean pore count of 208+/-160 per section. The high pore count and porosity were not visible on the standard clinical radiographs.
authors.affiliation: Department of Surgery, Section of Orthopaedics, University of Kansas School of Medicine-Wichita, Wichita, Kansas, USA.
authors.forename: Craig L
authors.initials: CL
authors.lastname: Hansen
authors.forename: David A
authors.initials: DA
authors.lastname: McQueen
authors.forename: Elizabeth A
authors.initials: EA
authors.lastname: Friis
authors.forename: Francis W
authors.initials: FW
authors.lastname: Cooke
authors.forename: Christopher W
authors.initials: CW
authors.lastname: Widenhouse
mesh_terms: D000818:Animals; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D001843:Bone Cements; D006622:Hip Prosthesis; D011093:Polyethylene Terephthalates; D016062:Porosity; D013552:Swine
chemical_list: D001843:Bone Cements; D011093:Polyethylene Terephthalates