Disengaging The Taper Junction; Disengaging The Proximal Body From The Distal Stem Implant - Zimmer Biomet Arcos Modular Femoral Revision System Surgical Technique

Arcos Broach/Calcar Proximal Body Surgical Technique
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Disengaging the Taper Junction

Disengaging the Proximal Body
from the Distal Stem Implant
To disengage the proximal body implant from the
distal stem, remove the locking screw with the
3.5 mm hex driver and thread the taper disassembly
tool that matches the proximal body height to
the proximal body implant (Figure 71). Attach the
torque wrench to the taper disassembly tool and,
with the anti-rotation handle attached to the neck
of the proximal body, turn the torque wrench
clockwise until the proximal body disengages the
distal stem (Figure 72). When resistance is felt,
continue to slowly turn the torque handle and, after
each quarter turn of the handle, pull the underside
of the taper disassembly tool until the proximal
body disengages.
Figure 71 Figure 72
Note: When disengaging the taper junction within
the femur the proximal body may feel tight within
the bone although the taper junction is disengaged.
This is due to the initial fixation of the PPS coating to
the bone. Gently tap the underside of the taper
disassembly tool with the mallet to extricate the
proximal body from the bone. Do NOT continue
tightening the torque wrench as this may damage
the implant.