The device, used in treatment, was not returned for evaluation and the reported event could not be confirmed.The clinical/medical evaluation concluded that based on the limited information, the root cause of the ¿pain¿ which precipitated the revision cannot definitively be concluded.The patient¿s stated rheumatoid arthritis and poor bone stock might be the major source of the pain experienced by this patient and the poor bone stock could be factor for the revision and not a failure of the components.A complaint history review found related failures; this failure mode will be monitored for future complaints and assessed for any necessary corrective actions.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 have no 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 documents revealed this failure mode and potential harm was previously identified.Potential probable causes could be but not limited to traumatic injury, joint tightness, material in use, patient reaction, design of device, bone quality, and patient health post-operatively.Based on this investigation, the need for corrective action is not indicated.Without the return of the actual product involved or product information, our investigation could not proceed.Should the device or additional information be received, the complaint will be reopened.No further investigation is warranted for this complaint; however, we will continue to monitor for future complaints and investigate as necessary.
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