ALEXANDRIA, Va., April 21 -- United States Patent no. 12,605,172, issued on April 21, was assigned to WRIGHT MEDICAL TECHNOLOGY INC. (Memphis, Tenn.).

"Methods and system for extramedullary guidance" was invented by Meghan R. Kubacki (Cookeville, Tenn.), Kian-Ming Wong (Lakeland, Tenn.) and Steven L. Haddad (Glenview, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system and method fare provided for preparing the distal tibia in an ankle replacement via an extra-medullary jig. An extra-medullary jig or C-bracket is positioned on the tibia with a registration reference and positioned with respect to a resection in the distal tibia via an anterior mounting block which is independent of the surface of th...