title: The performance of three vacuum-mixing cement guns--a comparison of the fatigue properties of simplex P cement.
abstract: We tested three commercially available cement-mixing systems (Howmedica, Summit and Stryker). After mixing the cement was allowed to cure in metal moulds under standard conditions. Sixty-nine cement blocks were produced. The fatigue behavior of the blocks was tested until failure. A wide scattering of results was observed in all the three systems. Uneven mixing of the polymer and monomer was observed in the Howmedica system. A significantly stronger cement (P=0.018) was produced with the Stryker system.
authors.affiliation: Department of Orthopaedic Surgery, The University of Hong Kong, Queen Mary Hospital, Hong Kong. peterwpyau@yahoo.com
authors.forename: W P
authors.initials: WP
authors.lastname: Yau
authors.forename: T P
authors.initials: TP
authors.lastname: Ng
authors.forename: K Y
authors.initials: KY
authors.lastname: Chiu
authors.forename: K C
authors.initials: KC
authors.lastname: Poon
authors.forename: W Y
authors.initials: WY
authors.lastname: Ho
authors.forename: D K
authors.initials: DK
authors.lastname: Luk
mesh_terms: D001843:Bone Cements; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D006801:Humans; D008422:Materials Testing / Q000379:methods*; D019637:Orthopedic Procedures / Q000295:instrumentation*; D012680:Sensitivity and Specificity; D013314:Stress, Mechanical; D013499:Surface Properties; D013718:Tensile Strength; D014618:Vacuum
chemical_list: D001843:Bone Cements