smith&nephew LEGION Cones, Хирургическая техника

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Femoral Cones Surgical Technique
The LEGION™ Femoral Cones were designed to
be used with the LEGION Constrained Femoral
Component or the LEGION HK femoral component
and the complete range of offset couplers
depending upon the stem size, offset needed and
the Femoral Cone size permitted by the anatomy.
There is a maximum of 20° of rotational freedom
between the anterior flange of the Femoral
Component and the Femoral Cone (+/- 10°
each side).
The ability to offset is built into the Femoral Cone
instead of in the instrumentation. Depending on
stem size and cone size, there is the ability to offset
up to 6mm between 3 and 9 o’clock. Reference the
sizing guide below to determine which size cone
can accommodate the various levels of offset.
Minimum Femoral Cone Size with Offset Couplers
Note: The labeled sizes of the LEGION Cones are
the functional internal diameters (ID). The IDs are
relative to the functional diameters of LEGION Press-
Fit Stems including the 1mm diametrically oversized
cutting flutes. For example, a size 22 ID LEGION
Femoral Cone can accept up to a 22mm LEGION
Press-Fit Stem without offset.
1. With the offset amount and Stem size desired,
reference the chart for the minimum Femoral
Cone Size needed to accommodate the desired
implant construct.
Example: If you have used a 22mm reamer with
a 6mm offset coupler, the minimum size Femoral
Cone required is 24.
Minimum Femoral Cone Size (per offset)
Max Offset
0 18
2mm 20
4mm 22
6mm 24