smith&nephew LEGION Cones, Хирургическая техника

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Femoral Cones Surgical Technique
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Figure 40
Figure 39
Sequential Broaching
continued
Caution: If excessive force is used, fracture may
occur. It is advised to broach in and out to relieve
stresses on the bone.
4. With attention to rotation, lightly impact the Cone
Handle Assembly with a mallet until the desired
depth is reached.
Tip: 5mm Depth marks are provided on the Cone
Handle for additional canal depth referencing (Figure
39a) when a deeper cone position is required.
Tip: If distal augments are used on both the medial
and lateral condyles broach until the corresponding
augment reference line on the Femoral Broaches
(Figure 39b) aligns with the distal cut surface.
For example, if no wedge is present on the lateral
side and a 10mm wedge is present on the medial
side, broach to the depth shown in Figure 39.
5. While utilizing the same alignment orientation
as the previous broach, sequentially broach
with the next larger size until the desired size
and stability is reached.
Femoral Cone Trial
1. Remove the last Femoral Cone Broach from
the Cone Handle, noting the broach size and
assemble the corresponding size Femoral Cone
Impactor Head and Femoral Cone Trial.
Note: The Femoral Cone Impactor Heads are
symmetric and have the same depth markings
as the Femoral Broaches on the medial side
(Figure 40b).
2. Insert the Cone Trial into the prepared femur
utilizing the same alignment orientation and
canal depth referencing on the Cone Handle
Assembly (Figure 40a).
Note: The Femoral Cone Trials are the same
external size as their corresponding Femoral Cone
Broaches, therefore, little to no impaction should
be required for the Femoral Cone Trial placement.