Proximal conical stem
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United States of America Patent
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-
Mar 10, 1998
Issued Date -
N/A
app pub date -
Feb 12, 1996
filing date -
Jul 14, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A cementless femoral hip stem component includes an elongate stem having opposing distal and proximal sections. The proximal section includes a conical stem surface which terminates in a proximal end. A collar having a conical undersurface extends laterally outward from the proximal end of the stem. The proximal conical stem portion and the conical undersurface of the collar cooperatively define a unitary double-cone contact surface to allow the collar to subsidably engage with external cortical bone in tandem with the proximal conical stem subsidably engaging with the internal femoral canal.
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