US 12,226,164 B2
Systems and methods for planning and assisting orthopaedic surgical procedures
Adam Ryals, Fuquay Varina, NC (US); and Daniel Girardeau-Montaut, Grenoble (FR)
Assigned to DEPUY IRELAND UNLIMITED COMPANY, Ringaskiddy (IE)
Filed by DEPUY IRELAND UNLIMITED COMPANY, Ringaskiddy (IE)
Filed on Dec. 30, 2022, as Appl. No. 18/091,486.
Prior Publication US 2024/0216064 A1, Jul. 4, 2024
Int. Cl. A61B 34/10 (2016.01); A61F 2/46 (2006.01)
CPC A61B 34/10 (2016.02) [A61F 2/461 (2013.01); A61B 2034/107 (2016.02); A61F 2002/4633 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for generating a surgical plan for an orthopaedic surgical procedure, the method comprising:
receiving, by a computer system, a plurality of surgeon preferences comprising a target value and one or more boundary values associated with a surgical parameter of the orthopaedic surgical procedure,
performing, with the computer system, bony registration of bony anatomy of a patient,
performing, with the computer system, leg-alignment registration of the patient, wherein performing the leg-alignment registration comprises measuring a flexion gap of a knee joint of the patient and measuring an extension gap of the knee joint, and
determining, by the computer system, the surgical plan for the orthopaedic surgical procedure based on the plurality of surgeon preferences, the bony registration, and the leg-alignment registration, wherein the surgical plan comprises a planned value associated with the surgical parameter of the orthopaedic surgical procedure, wherein the planned value is within the one or more boundary values associated with the surgical parameter, and wherein determining the surgical plan for the orthopaedic surgical procedure comprises automatically adjusting a tibial coronal alignment by:
determining an initial proximal tibia resection height based on the surgeon preferences and an estimate of cartilage loss, and
while the proximal tibia resection height is within a minimum proximal tibia resection height boundary of the surgeon preferences, iteratively decreasing the proximal tibia resection height until a coronal angle of a tibia of the patient is within a tibial varus/valgus boundary of the surgeon preferences.