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The investigation revealed a reported complaint that relates to a precice, antegrade femur, greater trochanter bend, 10.7mm x 245mm nail.The report states that a revision surgery occurred because the nail was not distracting a month after being implanted.There was no patient injury as a result of the reported event.The nail was returned to globus medical for evaluation.A visual inspection did not reveal any physical damage to the exterior of the nail.The nail measured at 247.43mm upon receipt, showing that it had partially distracted while implanted in the patient.X-ray images of the internal mechanism were taken and did not show any discrepancies that would cause the distraction mechanism to fail while in-situ.The nail was then put in the stroke test fixture where it was able to fully distract and retract.The nail was also able to output over 180lbs of force, meeting the production requirements for product lot release.Dhr and production x-rays were reviewed, and it was determined that the device was fully functional before leaving nuvasive.Premature consolidation or soft tissue contraction forces could have caused this nail to not be able to distract.In conclusion, the complaint for failure to distract was not verified due to the fact the device functioned as intended, and no fault was found.A review of the dhr documents indicates the device was manufactured by the specified requirement at the time and met all the required inspections before shipment.Rate is within the predicted rated, no new harm determined.The associated risk document was reviewed, and the failure mode, effects, and harms potentially related to the reported event have been identified and mitigated.Furthermore, the complaint rate is within the estimated rate in the risk documentation associated with this product.Based on this risk assessment, no new or additional risk evaluation is necessary.
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