US 12,303,207 B2
Automated planning of shoulder stability enhancement surgeries
Maximilien Mayya, Antibes (FR); and Jean Chaoui, Locmaria Plouzané (FR)
Assigned to Howmedica Osteonics Corp., Mahwah, NJ (US)
Appl. No. 17/607,323
Filed by HOWMEDICA OSTEONICS CORP., Mahwah, NJ (US)
PCT Filed May 8, 2020, PCT No. PCT/US2020/032085
§ 371(c)(1), (2) Date Oct. 28, 2021,
PCT Pub. No. WO2020/236441, PCT Pub. Date Nov. 26, 2020.
Claims priority of provisional application 62/850,238, filed on May 20, 2019.
Prior Publication US 2022/0202496 A1, Jun. 30, 2022
Int. Cl. A61B 34/10 (2016.01); A61B 34/00 (2016.01); A61F 2/30 (2006.01)
CPC A61B 34/10 (2016.02) [A61B 34/25 (2016.02); A61B 2034/104 (2016.02); A61B 2034/105 (2016.02); A61F 2/30942 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A computing system comprising:
one or more memories configured to store data describing a 3-dimensional (3D) model of a predicted premorbid humerus of a patient; and
processing circuitry configured to:
determine a first areal size as an areal size of a predicted premorbid glenoid bone of the patient;
determine a second areal size as an areal size of a Bankart lesion on a morbid glenoid bone of the patient;
determine a third areal size as an areal size of a geodesic surface on the 3D model of the predicted premorbid humerus of the patient, wherein the geodesic surface is defined at least in part by (i) a projected medial border of a Hill-Sachs lesion on a morbid humerus and (ii) a projected medial border of a footprint of a humeral head of the morbid humerus, wherein:
the projected medial border of the Hill-Sachs lesion is a projection of a medial border of the Hill-Sachs lesion onto the 3D model of the predicted premorbid humerus, and
the projected medial border of the footprint of the humeral head of the morbid humerus is a projection of a medial border of the footprint of the humeral head of the morbid humerus onto the 3D model of the predicted premorbid humerus;
determine, based on the first, second, and third areal sizes, whether bone loss of the patient involves joint engagement; and
based on a determination that the bone loss of the patient involves joint engagement, output an indication that a shoulder stability enhancement surgery that includes a bone graft is recommended for the patient.
 
14. A computing system comprising:
means for determining a first areal size as an areal size of a predicted premorbid glenoid bone of a patient;
means for determining a second areal size as an areal size of a Bankart lesion on a morbid glenoid bone of the patient;
means for determining a third areal size as an areal size of a geodesic surface on a 3-dimensional (3D) model of a predicted premorbid humerus of the patient, wherein the geodesic surface is defined at least in part by (i) a projected medial border of a Hill-Sachs lesion on a morbid humerus and (ii) a projected medial border of a footprint of a humeral head of the morbid humerus, wherein:
the projected medial border of the Hill-Sachs lesion is a projection of a medial border of the Hill-Sachs lesion onto the 3D model of the predicted premorbid humerus, and
the projected medial border of the footprint of the humeral head of the morbid humerus is a projection of a medial border of the footprint of the humeral head of the morbid humerus onto the 3D model of the predicted premorbid humerus;
means for determining, based on the first, second, and third areal sizes, whether bone loss of the patient involves joint engagement; and
means for outputting, based on a determination that the bone loss of the patient involves joint engagement, an indication that a shoulder stability enhancement surgery that includes a bone graft is recommended for the patient.
 
15. A method comprising:
storing data describing a 3-dimensional (3D) model of a predicted premorbid humerus of a patient;
determining, by one or more processors, a first areal size as an areal size of a predicted premorbid glenoid bone of the patient;
determining, by the one or more processors, a second areal size as an areal size of a Bankart lesion on a morbid glenoid bone of the patient;
determining, by the one or more processors, a third areal size as an areal size of a geodesic surface on the 3D model of the predicted premorbid humerus of the patient, wherein the geodesic surface is defined at least in part by (i) a projected medial border of a Hill-Sachs lesion on a morbid humerus and (ii) a projected medial border of a footprint of a humeral head of the morbid humerus, wherein:
the projected medial border of the Hill-Sachs lesion is a projection of a medial border of the Hill-Sachs lesion onto the 3D model of the predicted premorbid humerus, and
the projected medial border of the footprint of the humeral head of the morbid humerus is a projection of a medial border of the footprint of the humeral head of the morbid humerus onto the 3D model of the predicted premorbid humerus;
determining, by the one or more processors, based on the first, second, and third areal sizes, whether bone loss of the patient involves joint engagement; and
based on a determination that the bone loss of the patient involves joint engagement, outputting, by the one or more processors, an indication that a shoulder stability enhancement surgery that includes a bone graft is recommended for the patient.