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The Optetrak® PS (Exactech, Inc., Gainesville, FL) has been a well-functioning posterior stabilized knee replacement since its introduction in 1995. In 2009, the Optetrak Logic® incorporated modifications to the anterior face of the tibial post and the corresponding anterior articulating surface of the femoral component to reduce edge loading on the polyethylene post. In this study, we provide the...
Oxidized zirconium (OxZr) was introduced to serve as a ceramic surface for femoral components in TKA. The aim of this study was to compare retrieved OxZr components and corresponding PE inserts in matched comparison with conventional cobalt/chrome/molybdenum alloy (CoCrMo).Eleven retrieved posterior stabilized TKA with an OxZr femoral component were included. This included 6 implants from an earlier...
Observations made on retrieval total joint components provide valuable information for the clinician and the implant designer. This is true whether the components are removed for failure or if they are retrieved at autopsy from well-functioning joints. Retrieved components furnish direct evidence of the performance of the device design and of the materials from which it was fabricated. When retrieved...
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