Pt in operating room for fixation of left periprosthetic distal femur fracture.
When the surgeon was attempting to place the oblique screw, he noted that the pt's knee arthroplasty blocked the trajectory of the drill bit.
The drill bit fractured upon attempting to pass the knee arthroplasty.
It was removed, and the fragment of the drill bit was able to be retained and removed from the knee.
Surgery proceeded without further incident.
No harm to pt.
Fda safety report id# (b)(4).
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