US 12,245,819 B2
Method of surgery
Samuel John Macdessi, Haberfield (AU); Darren Chen, Woollahra (AU); and William Griffiths-Jones, Devon (GB)
Assigned to Mako Surgical Corp., Weston, FL (US)
Appl. No. 17/278,082
Filed by Mako Surgical Corp., Fort Lauderdale, FL (US)
PCT Filed Nov. 29, 2018, PCT No. PCT/AU2018/000241
§ 371(c)(1), (2) Date Mar. 19, 2021,
PCT Pub. No. WO2020/056443, PCT Pub. Date Mar. 26, 2020.
Claims priority of application No. 2018903520 (AU), filed on Sep. 19, 2018.
Prior Publication US 2021/0346036 A1, Nov. 11, 2021
Int. Cl. A61B 34/10 (2016.01); A61B 5/107 (2006.01); A61B 17/15 (2006.01); A61B 17/56 (2006.01); A61B 90/00 (2016.01)
CPC A61B 34/10 (2016.02) [A61B 5/1071 (2013.01); A61B 17/155 (2013.01); A61B 17/157 (2013.01); A61B 17/56 (2013.01); A61B 90/06 (2016.02); A61B 2017/565 (2013.01); A61B 2090/067 (2016.02)] 22 Claims
OG exemplary drawing
 
1. A computer-implemented method for planning a total knee replacement surgical procedure on a knee of a leg of a patient comprising:
obtaining by a processor anatomical data for the leg of the patient via analysis of one or more digital representations of the leg;
calculating by the processor a lateral distal femoral angle (LDFA) and a medial proximal tibial angle (MPTA) from the anatomical data;
determining by the processor an arithmetic hip-knee-ankle angle (aHKA) from the LDFA and the MPTA;
setting a proximal tibial resection plane angle;
determining by the processor a distal femoral resection plane angle from the proximal tibial resection plane angle and the aHKA, wherein the distal femoral resection plane angle is determined such that a resulting hip-knee-ankle angle (HKA) is equal to the aHKA;
generating by the processor a surgical plan including the proximal tibial resection plane angle and the distal femoral resection plane angle;
outputting via a user interface the surgical plan and the resulting hip-knee-ankle angle (HKA), and
resecting a portion of a tibia based at least partly on the proximal tibial resection plane angle,
wherein the surgical plan on the user interface is configured for interactive adjustments and visualization of the proximal tibial resection plane angle and the distal femoral resection plane angle.