title: Comparison of two pressurisers for cementation of the proximal femur.
abstract: OBJECTIVE
  To compare pressures generated by 2 different cement pressurisers at various locations in the proximal femur.
  
  
  METHODS
  Two groups of 5 synthetic femurs were used, and 6 pressure sensors were placed in the femur at 20-mm intervals proximally to distally. Cement was filled into the femoral canal retrogradely using a cement gun with either the half-moon pressuriser or the femoral canal pressuriser. Maximum pressures and pressure time integrals (cumulative pressure over time) of the 2 pressurisers were compared.
  
  
  RESULTS
  At all sensors, the half-moon pressuriser produced higher maximum pressures and pressure time integrals than the femoral canal pressuriser, but the difference was significant only at sensor 1 (proximal femur). This may result in reduced cement interdigitation in the proximal femur.
  
  
  CONCLUSIONS
  The half-moon pressuriser produced higher maximum cementation pressures and pressure time integrals than the femoral canal pressuriser in the proximal femur region, which is critical for rotational stability of the implant and prevention of implant fracture.
authors.affiliation: Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia.
authors.forename: Takkan
authors.initials: T
authors.lastname: Morishima
authors.forename: Godwin G H
authors.initials: GG
authors.lastname: Choy
authors.forename: Ross W
authors.initials: RW
authors.lastname: Crawford
authors.forename: Lance J
authors.initials: LJ
authors.lastname: Wilson
mesh_terms: D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D002484:Cementation / Q000295:instrumentation*; D005269:Femur / Q000601:surgery*; D006622:Hip Prosthesis; D006801:Humans; D008954:Models, Biological; D011312:Pressure
keywords: arthroplasty, replacement, hip; bone
  cements; femur