Porosity of neat and composite bone cement mantles.
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.
Hansen
Craig L
CL
Department of Surgery, Section of Orthopaedics, University of Kansas School of Medicine-Wichita, Wichita, Kansas, USA.
McQueen
David A
DA
Friis
Elizabeth A
EA
Cooke
Francis W
FW
Widenhouse
Christopher W
CW
D000818:Animals; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D001843:Bone Cements; D006622:Hip Prosthesis; D011093:Polyethylene Terephthalates; D016062:Porosity; D013552:Swine
D001843:Bone Cements; D011093:Polyethylene Terephthalates