The product was returned and the event was confirmed.Investigation found the instrument has been in the field for 9 years and shows extensive wear from use.The leading screw threads are damaged and worn down which probably prevented the inserter from capturing the trial screws threads.Instrument was simply worn beyond it's useful life.Review of dhr and complaint history were performed and no deviations or trends were noted.There are warnings in the package insert that this type of event can occur and risks are addressed in risk documentation.Under care and handling of instruments, number 1 states, "surgical instruments and instrument cases are susceptible to damage for a variety of reasons including prolonged use, misuse, rough or improper handling.Care must be taken to avoid compromising their exacting performance." following review, no new risks were identified.If any further information is found which would change or alter any conclusions or information, a supplemental will be filed accordingly.Zimmer biomet will continue to monitor for trends.
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It was reported that during a total primary hip fracture repair procedure on (b)(6) 2014, the surgeon attempted to engage the threaded ringloc rod with the hole in the trial magnum cup and was unsuccessful.The surgeon then attempted to use a taperloc stem handle to engage the trial magnum cup and was successful.Once engaged, the surgeon manually adjusted the rod.There was no delay in the procedure.No adverse events have been reported as a result of the malfunction.
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