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The investigation revealed a complaint relating to a precice bone transport, retrograde femur, 11.5mm x 400mm nail, that was reported as breaking due to insufficient bone healing.It is suspected that the patient was weight bearing more than what is recommended in the ifu.The device was not returned as it was discarded post explantation, so a device evaluation was not possible.However, a device history record (dhr) review was performed for the lot 3060111aaa, and there were no deviations in the manufacturing process, and the finished product met all acceptance criteria prior to shipment.Without further information or the physical device to evaluate, this complaint cannot be confirmed.Because the patient did not follow the surgeon's post-op instructions, it is most likely that the nail failed due to torsional forces exerted on the nail due to weight bearing.The associated risk document was reviewed, and the failure mode, effects, and harms potentially related to the 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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