Zimmer Biomet Arcos Modular FemoralRevision System, Хирургическая техника

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Arcos Broach/Calcar Proximal Body
Surgical Technique
Figure 21 Figure 22
Locked Position
Calcar/Broach Proximal Bodies & STS Distal Stems
Sterile Field Technique
Trialing the Distal Stem
When distal femoral reaming is complete, select the
stem trial that is the same diameter as the final reamer
and the necessary length for stem stability. Thread the
black distal trial inserter into the stem trial and insert
the stem trial into the femur, matching the etched
depth mark on the inserter to the depth achieved from
the last STS reamer used (Figure 22).
Note:
The stem trial and reamer are the same size.
Both are 1 mm smaller than the femoral implant.
Preparation of the Diaphysis
To prepare the femur for an STS distal stem, select
the STS reamers (silver reamers for 150 mm stem
length and gold reamers for a 190 mm stem length).
Assemble the STS reamer to the T-handle and turn the
handle from torque limiting to the locked position.
Ream the femur in 1 mm increments by hand until the
reamer advances to the 60 mm mark, referencing the
tip of the greater trochanter (Figure 21).
Note: The final depth of the implant may vary from
the depth of the reamer. How aggressively the
femur is prepared and the quality of the bone
may impact the depth that the final implant will
seat. If the final implant sits proud of the desired
ream depth, note the difference between these and
utilize the last reamer used to ream deeper into the
femur. Reaming the femur by hand may help avoid
any discrepancy between the reamed depth and
the final depth of the implant.