On (b)(6) 2015, surgeon was doing a right total hip arthroplasty and was trialing the femoral head with zimmer trial heads.As the surgeon was removing the trial component, the component became dislodged.C-arm and portable x-rays were obtained to locate the trial head; trial head was not visible.A second trial head component was also became dislodged.The total hip arthroplasty was completed and the surgeon closed.On (b)(6) 2015, ct scan obtained and revealed two rounded radiopaque foreign bodies located within the right lower aspect of the pelvis.One trial head located along the right lateral margin of the urinary bladder and the other is abutting the medial aspect of the right iliac bone just below the si joint.On (b)(6) 2015, pt returned to surgery and underwent a retroperitoneal exploration of the right pelvis and removal of the two foreign bodies.
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