Concomitant medical products: item name: nexgen trabecular metal primary patella, item: 00587806538, lot: 62410797.Item name: nexgen trabecular metal cruciate retaining standard, item: 42502806802, lot: 62480234.Item name: nexgen articular surface cr right 12 mm, item: 42522000512, lot: 62342605.Device evaluation summary: no devices or photos were received; therefore the condition of the devices is unknown.The device history records for the tibial component were reviewed with no deviations or anomalies identified.This device is used for treatment.The reported components were reviewed for compatibility with no issues noted.Primary operative notes indicate that the patient underwent right total knee arthroplasty (tka) due to chronic knee pain and osteoarthritis.The implants were noted to provide adequate stability and range of motion.The surgeon noted no intraoperative complications during the primary surgery.The operative notes from the revision surgery indicate that the patient had been in pain shortly after the primary tka, and that the surgeon suspected the patient had tibial osteolysis with impending loosening.The tibial component, femoral component, and articular surface were removed during the revision surgery.The patellar component was not removed.The notes state that a quarter size area of osteolysis was identified when the tibial component was removed; there were no indications that the tibial component was loose.There were no issues noted with the femoral component, and no mention of excessive damage or wear of the articular surface that may have contributed to the osteolysis.A definitive root cause cannot be determined with the information provided.
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