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It was reported that after a road traffic accident, the patient had a plating surgery on the 2nd metacarpal bone on (b)(6) 2022.During surgery, while the surgeon was inserting the evos 2.0mm x 12mm lck scr t6 s-t with finger twisting force, it fractured.However the device was embedded and was unable to explant.After the surgery the patient presented an infection that was addressed via revision surgery on (b)(6) 2022 and the evos 2.0mm x 12mm lck scr t6 s-t was explanted.The patient current status is unknown.
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D4, h3, h6: the device was not returned for evaluation but the pictures were reviewed, and the fracture was confirmed.The clinical/medical investigation concluded that, based on the information, the device remains implanted.Therefore, we cannot confirm the root cause of the reported fracture.Although, excessive force cannot be ruled out as a possibility as it was reported the surgeon inserted it with ¿finger twisting force.¿ the ifu for the evos plating system warns: ¿intra-operative fracture or breaking of instruments can occur.Instruments which have experienced extensive use or excessive force are susceptible to fracture.¿ in additional it was reported there was an infection which cannot be confirmed as related to the broken screw which is an implantable product.According to the report, the patient was revised to treat this adverse event and the broken screw was removed.Since, it was reported the patient¿s outcome is unknown, the impact to the patient beyond that which has been reported, cannot be confirmed nor concluded.Should any additional relevant medical information be provided, this case would be re-assessed.A review of the manufacturing records did not reveal a manufacturing abnormality that could have caused or contributed to the reported incident.Verifying the device configuration according to the drawing print is within the steps of the final inspection, additionally, as part of the material specifications, the quality and manufacture of special stainless steel should be controlled.A review of complaint history for the part number over the past 12 months and for the batch number based on historical data of the device did not reveal similar events for the listed device.A review of the instructions for use documents for mini-fragment plating system revealed that it is extremely important to select the appropriate size and type components.Failure to use the largest possible components or improper positioning may result in loosening, bending, cracking, or fracture of the device or bone or both has been identified as a warning.A review of the risk management file revealed this failure mode was previously identified.The anticipated risk level is still adequate.A historical review concluded that there are no prior actions related to this product and event.A review of the sterilization records revealed the batch was sterilized within normal parameters.At this time, we have no reason to suspect that the product failed to meet any product specifications at the time of manufacture.Some potential probable causes for this event could include but not limited to excessive forces applied to implant, surgical technique, contamination, patient reaction, and post-operative healing issue.The contribution of the device to the reported incident could be corroborated as the x-rays confirm the fracture screw.Based on this investigation, the need for corrective action is not indicated.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.We consider this investigation closed.B5: describe event or problem.
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