US 12,080,014 B2
Virtual ligament balancing
Gokce Yildirim, Weehawken, NJ (US); Sally Liarno, Bergenfield, NJ (US); and Mark Gruczynski, Kinnelon, NJ (US)
Assigned to Howmedica Osteonics Corp., Mahwah, NJ (US)
Filed by Howmedica Osteonics Corp., Mahwah, NJ (US)
Filed on Sep. 27, 2022, as Appl. No. 17/953,737.
Application 17/024,896 is a division of application No. 16/211,706, filed on Dec. 6, 2018, granted, now 10,827,971, issued on Nov. 10, 2020.
Application 17/953,737 is a continuation of application No. 17/024,896, filed on Sep. 18, 2020, granted, now 11,484,251.
Claims priority of provisional application 62/608,050, filed on Dec. 20, 2017.
Prior Publication US 2023/0025727 A1, Jan. 26, 2023
Int. Cl. G06T 7/60 (2017.01); G06T 7/00 (2017.01)
CPC G06T 7/60 (2013.01) [G06T 7/0014 (2013.01); G06T 2207/30008 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method of preoperatively planning a knee arthroplasty, comprising:
obtaining, by one or more processors, a medical image of a patient's knee joint;
determining, by one or more processors based on the medical image, a patient bone density profile associated with a medial tibial condyle, the bone density profile being based on a bone density at two or more locations on the medial tibial condyle, each of the two or more locations being associated with a knee joint soft tissue attachment site;
automatically determining, by one or more processors based on the patient bone density profile and one or more bone density profiles stored in memory, an ACL deficiency metric; and
identifying, by the one or more processors based on the ACL deficiency metric, an ACL sparing or an ACL sacrificing knee implant system; and
outputting, by the one or more processors, the identified ACL sparing or the ACL sacrificing knee implant system.