US 12,226,163 B2
Orthopaedic pre-operative planning system
Thor Franciscus Besier, Auckland (NZ); Ju Zhang, Auckland (NZ); and Antonije Velevski, Auckland (NZ)
Assigned to Formus Labs Limited, Auckland (NZ)
Appl. No. 17/620,291
Filed by Formus Labs Limited, Auckland (NZ)
PCT Filed Jun. 29, 2020, PCT No. PCT/IB2020/056143
§ 371(c)(1), (2) Date Dec. 17, 2021,
PCT Pub. No. WO2020/261249, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 755005 (NZ), filed on Jun. 28, 2019; and application No. 736379 (NZ), filed on Apr. 20, 2020.
Prior Publication US 2022/0249168 A1, Aug. 11, 2022
Int. Cl. A61B 34/10 (2016.01); A61B 5/00 (2006.01); A61B 5/11 (2006.01); A61B 6/46 (2024.01); A61B 6/50 (2024.01); G06T 19/20 (2011.01)
CPC A61B 34/10 (2016.02) [A61B 5/0022 (2013.01); A61B 5/1114 (2013.01); A61B 5/4851 (2013.01); A61B 5/7264 (2013.01); A61B 5/7275 (2013.01); A61B 6/465 (2013.01); A61B 6/468 (2013.01); A61B 6/505 (2013.01); G06T 19/20 (2013.01); A61B 2034/104 (2016.02); A61B 2034/105 (2016.02); A61B 2034/108 (2016.02); A61B 2562/0219 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for determining one or more of selection, positioning or placement of a surgical implant, the method including the steps of:
obtaining pre-operative data regarding an impaired anatomical structure of a patient;
producing a patient anatomical model;
predicting, using the obtained pre-operative data and the produced patient anatomical model, function of the anatomical structure in an unimpaired condition;
predicting post-operative function of the structure for one or more implants;
performing a range of motion analysis on the predicted unimpaired function and the predicted post-operative function to calculate one or more differences and minimising the one or more differences between the predicted post-operative function and the predicted unimpaired function; and
selecting one or more of the implants, positions of the one or more implants or locations of the one or more implants to improve the predicted post-operative function.