Method and system for computer assisted surgery for...

A - Human Necessities – 61 – B

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A61B 19/00 (2006.01)

Patent

CA 2678222

A method of resecting distal and anterior portions of a distal portion of a femur for a bicompartmental prosthesis is provided. The method includes generating a geometric representation of the distal portion of the femur. A virtual anterior resection plane is calculated at a predetermined depth and is oriented at a predetermined angle relative to the femur. The method identifies a distal-most point of a lateral portion of the virtual anterior resection plane and an AP line. A varus/ valgus angle and an anterior-posterior distance are calculated. Anterior and distal resection guides are navigated according to the parameters calculated from the method.

La présente invention concerne un procédé de résection des parties distale et antérieure d'une partie distale d'un fémur pour une prothèse bicompartimentale. Le procédé comprend la génération d'une représentation géométrique de la partie distale du fémur. Un plan virtuel de résection antérieure est calculé à une profondeur prédéterminée et est orienté selon un angle prédéterminé par rapport au fémur. Le procédé identifie un point le plus distal d'une partie latérale du plan virtuel de résection antérieure et une ligne AP. Un angle varus/valgus et une distance antérieure-postérieure sont calculés. Des guides de résection antérieure et distale sont déplacés selon les paramètres calculés par le procédé.

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