Conclusion and justification status: the complaint states revision surgery was performed on (b)(6) 2017 grace hospital due to patients complain of pain and swelling.Surgeon reports he can see from the x-ray he has implanted the tray in varus.During surgery, surgeon reports minimal metallosis and minimal poly wear.He also reports the patient may have a low grade chronic infection.He reports no fault of the implant itself.All primary implant removed and pfc ps femur, mbt revision tray with 30mm cemented stem attached, and 15mm poly insert implanted.A complaint database search and review of manufacturing records did not identify any anomalies.The devices were reviewed by bioengineering and a report was received stating; following visual inspection, there are no signs of manufacturing or device defect.The insert appears to be worn where the lateral femoral condyle contacts the insert, which is apparent through discoloration and texture.As there is no further information available it is not possible to determine the cause of this.Without further information the root cause of the complaint cannot be determined.The complaint shall be closed with an undetermined conclusion; entered into the complaints database and monitored through trend analysis.If further information is received, the complaint shall be reopened and investigated further.Post market surveillance is per sep 419.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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