Design of an Advanced Bearing System for Total Knee Arthroplasty
AbstractThe objective of this study was to develop an advanced-bearing couple for TKA that optimizes the balance between wear resistance and mechanical properties. The mechanical and structural properties of virgin and highly crosslinked, re-melted UHMWPE were evaluated, and tibial inserts manufactured from these UHMWPE materials were tested against either oxidized zirconium (OxZr) or CoCr femoral components on a knee simulator. This study confirmed that the wear resistance of crosslinked UHMWPE improves with increasing radiation dose but is accompanied by a concomitant reduction in mechanical properties. Compared to CoCr, the ceramic surface of OxZr allows the use of a lower irradiation dose to achieve equivalent reductions in wear rates. As a result, a given wear rate can be achieved without sacrificing the mechanical properties to the same extent that is necessary with a CoCr femoral component. The advantage of ceramic counter bearing surfaces extends to both pristine and microabrasive conditions. View Full-Text
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Morrison, M.L.; Jani, S.; Parikh, A. Design of an Advanced Bearing System for Total Knee Arthroplasty. Lubricants 2015, 3, 475-492.
Morrison ML, Jani S, Parikh A. Design of an Advanced Bearing System for Total Knee Arthroplasty. Lubricants. 2015; 3(2):475-492.Chicago/Turabian Style
Morrison, Mark L.; Jani, Shilesh; Parikh, Amit. 2015. "Design of an Advanced Bearing System for Total Knee Arthroplasty." Lubricants 3, no. 2: 475-492.