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(b)(4).Investigation summary: examination of the returned instrument confirmed the complaint.Depuy-synthes considers the investigation closed at this time.Should additional information be received, the information will be reviewed, and the investigation will be re-opened as necessary.Territory 239 reported as "trials in poor condition." examination of the returned instrument confirmed the complaint; liner is worn and heavily scratched.The complaint sample consisted of (1) 221836154- pin trl lnr 10d 540dx36id, date code cy1203.The date code cy1203 indicates this device was manufactured in dec 2003 and is 18 years old.A five-year search of the complaint database found similar reports for this type of damage and the root cause was attributed to a combination of misuse and heavy usage.No evidence was found of product or design error as a contributing factor.Monitoring for potential safety signals will be conducted through complaint trending as part of post market surveillance.Device history lot: the product investigation found no evidence suspecting an error in the manufacturing or material that would be a contributing factor in the reported allegation(s).A manufacturing records evaluation (mre) was not performed.If information is obtained that was not available for the initial medwatch, a follow-up medwatch will be filed as appropriate.
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