Right knee revised on (b)(6) 2018, to address aseptic loosening of both the tibial base plate and the femur components at unspecified interfaces.There was reported extensive osteolysis affecting both the proximal tibia and distal femur bone beneath the implants.Femur, tibial base plate, and tibial insert components were revised; patella component was preserved.Knee revised to a competitor system, apart from the patella.Product and lot code information for the knee indicate this is a depuy sigma system right knee, not attune, as alleged.
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