The performance of three vacuum-mixing cement guns--a comparison of the fatigue properties of simplex P cement.
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.
Yau
W P
WP
Department of Orthopaedic Surgery, The University of Hong Kong, Queen Mary Hospital, Hong Kong. peterwpyau@yahoo.com
Ng
T P
TP
Chiu
K Y
KY
Poon
K C
KC
Ho
W Y
WY
Luk
D K
DK
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
D001843:Bone Cements