ALEXANDRIA, Va., March 5 -- United States Patent no. 12,239,540, issued on March 4, was assigned to Zimmer Inc. (Warsaw, Ind.).
"Asymmetric tibial components for a knee prosthesis" was invented by Mary S. S. Wentorf (Warsaw, Ind.), Jeffrey E. Bischoff (Warsaw, Ind.), Raymond C. Parisi (Wakarusa, Ind.) and Katherine M. Rettig (Cincinnati).
According to the abstract* released by the U.S. Patent & Trademark Office: "An orthopaedic tibial prosthesis includes a tibial baseplate with an asymmetric periphery which promotes proper positioning and orientation on a resected tibia, while also facilitating enhanced kinematics, soft-tissue interaction, and long-term fixation of the complete knee prosthesis. The asymmetric baseplate periphery is sized ...