title: Cement-in-cement revision for selected Vancouver Type B1 femoral periprosthetic fractures: a biomechanical analysis.
abstract: The aim of this study was to perform a biomechanical analysis of the cement-in-cement (c-in-c) technique for fixation of selected Vancouver Type B1 femoral periprosthetic fractures and to assess the degree of cement interposition at the fracture site. Six embalmed cadaveric femora were implanted with a cemented femoral stem. Vancouver Type B1 fractures were created by applying a combined axial and rotational load to failure. The femora were repaired using the c-in-c technique and reloaded to failure. The mean primary fracture torque was 117 Nm (SD 16.6, range 89-133). The mean revision fracture torque was 50 Nm (SD 16.6, range 29-74), which is above the torque previously observed for activities of daily living. Cement interposition at the fracture site was found to be minimal.
authors.affiliation: Orthopaedic Research Unit, Institute of Health and Biomedical Innovation, Queensland University of Technology, The Prince Charles Hospital, Brisbane, Queensland, Australia.
authors.forename: Christopher J
authors.initials: CJ
authors.lastname: Brew
authors.forename: Lance J
authors.initials: LJ
authors.lastname: Wilson
authors.forename: Sarah L
authors.initials: SL
authors.lastname: Whitehouse
authors.forename: Matthew J W
authors.initials: MJ
authors.lastname: Hubble
authors.forename: Ross W
authors.initials: RW
authors.lastname: Crawford
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001696:Biomechanical Phenomena; D001843:Bone Cements; D002102:Cadaver; D005260:Female; D005269:Femur / Q000601:surgery*; D006801:Humans; D008297:Male; D057068:Periprosthetic Fractures / Q000601:surgery*; D012086:Reoperation / Q000379:methods
chemical_list: D001843:Bone Cements