(b)(4).Multiple mdr reports were filed for this event, please see associated reports: 3007963827-2020-00238, 0001822565-2020-03346, 3007963827-2020-00239.Medical devices: femur cemented posterior stabilized (ps) narrow left size 8 catalog#: 42500006401 lot#: 64558631, natural tibia trabecular metal two-peg porous fixed bearing left size d catalog#: 42530006701 lot#: 64678941, articular surface fixed bearing posterior stabilized (ps) left 13 mm height catalog#: 42511400513 lot#: 64444409.Customer has indicated that the product will not be returned to zimmer biomet for investigation, as it remains implanted.The investigation is in process.Once the investigation has been completed, a follow-up mdr will be submitted.
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This follow-up report is being submitted to relay additional information.Updated: b4, b5, b7, g4, g7, h2, h3, h6, and h10.Reported event was confirmed by review of medical records.Review of the available records identified the following: three weeks after implantation: allergic reaction at knee resulting in rash and blisters, topical otc benedryl and hydrocortisone prescribed, outcome pending.Six week visit ¿ normal alignment and stability.Rom 100.6-10 degrees flexion contracture.Moderate pain.Normal radiographic findings.Two month office visit ¿ overall, patient reports her pain is improving, has less stiffness, and is pleased with her progress.Ambulating with appropriate gait with cane and walker.The incision is well healed and intact.Rom 3-115.The knee is stable with no laxity noted with valgus or varus stressing.Quadriceps strength 5/5.Neurovascularly intact.No x-rays on the visit.Previous x-rays have shown a well-positioned, stable arthroplasty.Surgeon¿s recommendations ¿ d/c formal therapy.Transition from cane/walker to cane only.Released to drive.F/u one month with plan to return to work.Device history record was reviewed and no discrepancies were found.The allergic reaction was most likely caused by the patient's allergies to wellbutrin, latex, and pcn since it was treated with otc meds; however it cannot be confirmed with the information available.Therefore, a definitive root cause cannot be determined.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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