Method for cementing an implant into bone
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United States of America Patent
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Dec 21, 1999
Issued Date -
N/A
app pub date -
Sep 9, 1997
filing date -
Mar 8, 1996
priority date (Note) -
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Abstract
In this method for cementing an implant into bone by means of an autopolymerising two-component bone cement the implant, in particular the stem of a hip prosthesis is preheated above room-temperature prior to its cementing into bone, preferably to at least 43.degree. C. By this method the stem-cement interface is warmer than the bone-cement interface and consequently a stiff cement shell will form first around the stem and the cement will shrink towards the stem and away from the bone. The resulting reduction of porosity at the stem-cement interface improves significantly the fatigue life of the system.
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