During removal of the intra-articular catheter following a right total knee arthroplasty, when approximately 2/3 of the way through the removal, the catheter became more flexible and 2-3 distinct wire like strands appeared.The plastic coating sheath was not apparent.No blue catheter tip was noted at the end of the catheter.Surgeon was notified, x-ray obtained which showed a linear radiopacity projected along the volar aspect of the femoral component of the prosthesis on the lateral view raising the possibility of a retained catheter fragment or wire.Patient returned to surgery the following day for removal of the catheter fragment.
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