The associated device was returned and evaluated.A visual inspection of the returned device could not confirm the stated failure mode.The device was found to be worn from use along the shaft of the device and the threads.A review of complaint history revealed similar events for the listed device over the previous 12 months, but no similar events for the batch based on the historical data, this failure mode will be monitored for future complaints for any necessary corrective actions.The clinical/medical evaluation concluded that with the information provided the exact cause of the reported failure is unable to be determined.However, early ambulation and noncompliance with the post-op plan of care cannot be ruled out as possible contributory factors to the reported cut out screw failure.The patient impact beyond the revision and expected post-op convalescence period cannot be determined.No further clinical assessment is warranted at this time.It should be noted the intertan surgical technique (01120-intl v2 71182195xx reva 10/15) indicates with the integrated interlocking screws it is optional to ¿engage the cannulated set screw.¿ a review of the manufacturing records did not reveal a manufacturing abnormality that could have caused or contributed to the reported incident.At this time, we do not have reason to suspect that the product failed to meet any product specifications at the time of manufacture.A review of the risk management file and instructions for use document revealed this failure mode was previously identified.The anticipated risk level is still adequate.Assessment of historical escalated cases concluded that there are no prior actions related to this device and failure mode.A contribution of the device to the reported event could not be corroborated.Possible causes could include but not limited to traumatic injury, patient anatomy or abnormal loading of limb.Based on this investigation, the need for corrective action is not indicated.Should additional information be received, the complaint will be reopened.No further investigation is warranted for this complaint; however, we will continue to monitor future complaints and investigate as necessary.We consider this investigation closed.
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