As reported, during a procedure on this (b)(6) female patient, the surgeon broke off the screw head from the screw body during insertion.It was very hard bone and the torque of trying to seat the screw into the acetabular cup caused the screw head to break off.The broken screw head was removed however the screw body was left inside the patient.The body of the screw was left inside the patient past the hole of the already seated acetabular cup.Patient was last known to be in stable condition following the event.
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Section h10: (h3) the evaluation noted that the revision was likely the result of an axial torque and a bending moment created by attempting to drive the screw into the patient¿s hard bone that may not have been fully drilled, leading to high stresses and ultimate fracture.However, this cannot be confirmed because the screw was not available for evaluation.No information provided in the following section(s): a4, a5, and b6.
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