Granted Patent B1

US 11,278,413 · App. 16/268,793 · Granted Mar 22, 2022

Inventor: Philipp K. Lang (Lexington, MA)

A61F2/30942A61F2/32A61F2/38A61F2/40A61F2/4202G16H30/40A61F2002/30943A61F2002/30948A61F2002/30952

Abstract

Claims (40)

1. A system for determining the fit of a virtual implant component for a replacement of a joint in a patient comprising:

at least one computer system comprising at least one processor,

wherein the at least one processor is configured to receive imaging data associated with the joint of the patient,

wherein the imaging data comprises at least one image of at least one anatomic structure of the joint, wherein the imaging data comprises a CT scan, an MRI scan, an ultrasound scan, data generated based on one, two or more x-rays or combinations thereof of the joint,

wherein the at least one processor is configured to generate a three-dimensional (3D) anatomic model of at least a portion of the joint based on the imaging data,

wherein the at least one processor is configured to access an electronic file of at least one virtual implant component, the at least one virtual implant component comprising at least one size and at least one shape associated with a physical implant component,

wherein the at least one processor is configured to align the virtual implant component in relationship to the at least one 3D anatomic model based at least in part on a mechanical axis, a rotation axis, a predetermined angle, an articular surface, a slope, a joint line, or combinations thereof, and

wherein the at least one processor is configured to use an artificial neural network to determine at least one measure that characterizes a degree of the fit of the virtual implant component in relationship to the at least one anatomic structure.

2. The system of claim 1 , wherein the at least one anatomic structure comprises at least one of a peripheral margin, a dimension, a shape, a radius, a convexity, or a concavity of at least one of a medial wall of the femoral notch, a lateral wall of the femoral notch, a roof of the femoral notch, a residual ACL origin, a residual ACL insertion, a medial wall of the medial condyle, a lateral wall of the lateral condyle, a medial epicondylar eminence, a lateral epicondylar eminence, a medial femoral condyle, a lateral femoral condyle, a posterior portion of medial femoral condyle, a posterior portion of lateral femoral condyle, a central portion of medial femoral condyle, a central portion of lateral femoral, an anterior portion of medial femoral condyle, an anterior portion of lateral femoral condyle, an intercondylar notch, an intercondylar notch surface, an intercondylar notch ceiling, an intercondylar notch medial wall, an intercondylar notch lateral wall, a posterior portion of medial tibial plateau, a posterior portion of lateral tibial plateau, a central portion of a medial tibial plateau, a central portion of a lateral tibial plateau, an anterior portion of medial tibial plateau, an anterior portion of lateral tibial plateau, a medial tibial spine, a lateral tibial spine, an anteromedial tibial rim, an anterolateral tibial rim, a medial tibial rim, a lateral tibial rim, a lowest point of the medial plateau, a lowest point of the lateral plateau, a highest point of the medial plateau, a highest point of the lateral plateau, a medial tibial plateau surface, a lateral tibial plateau surface, a medial tibial plateau surface, a lateral tibial plateau surface, a femoral offset, a tibial plateau offset, any of the foregoing structures on a surgically exposed surface, any of the foregoing structures in a subsurface location or combinations thereof.

3. The system of claim 1 , wherein the at least one processor is configured to determine an overhang or an oversizing of the virtual implant component in relationship to at least one of a peripheral margin, a dimension, a shape, a radius, a convexity, or a concavity of at least one of a medial wall of the femoral notch, a lateral wall of the femoral notch, a roof of the femoral notch, a residual ACL origin, a residual ACL insertion, a medial wall of the medial condyle, a lateral wall of the lateral condyle, a medial epicondylar eminence, a lateral epicondylar eminence, a medial femoral condyle, a lateral femoral condyle, a posterior portion of medial femoral condyle, a posterior portion of lateral femoral condyle, a central portion of medial femoral condyle, a central portion of lateral femoral, an anterior portion of medial femoral condyle, an anterior portion of lateral femoral condyle, an intercondylar notch, an intercondylar notch surface, an intercondylar notch ceiling, an intercondylar notch medial wall, an intercondylar notch lateral wall, a posterior portion of medial tibial plateau, a posterior portion of lateral tibial plateau, a central portion of a medial tibial plateau, a central portion of a lateral tibial plateau, an anterior portion of medial tibial plateau, an anterior portion of lateral tibial plateau, a medial tibial spine, a lateral tibial spine, an anteromedial tibial rim, an anterolateral tibial rim, a medial tibial rim, a lateral tibial rim, a lowest point of the medial plateau, a lowest point of the lateral plateau, a highest point of the medial plateau, a highest point of the lateral plateau, an uncut medial tibial plateau surface, an uncut lateral tibial plateau surface, a cut medial tibial plateau surface, a cut lateral tibial plateau surface, an uncut femoral condyle surface, a cut femoral condyle surface, an uncut anterior femur surface, a cut anterior femur surface, any of the foregoing structures on a surgically exposed surface, any of the foregoing structures in a subsurface location or combinations thereof based at least in part on the at least one 3D anatomical model.

4. The system of claim 1 , wherein the at least one processor is configured to determine an undersizing of the virtual implant component in relationship to at least one of a peripheral margin, a dimension, a shape, a radius, a convexity, or a concavity of at least one of a medial wall of the femoral notch, a lateral wall of the femoral notch, a roof of the femoral notch, a residual ACL origin, a residual ACL insertion, a medial wall of the medial condyle, a lateral wall of the lateral condyle, a medial epicondylar eminence, a lateral epicondylar eminence, a medial femoral condyle, a lateral femoral condyle, a posterior portion of medial femoral condyle, a posterior portion of lateral femoral condyle, a central portion of medial femoral condyle, a central portion of lateral femoral, an anterior portion of medial femoral condyle, an anterior portion of lateral femoral condyle, an intercondylar notch, an intercondylar notch surface, an intercondylar notch ceiling, an intercondylar notch medial wall, an intercondylar notch lateral wall, a posterior portion of medial tibial plateau, a posterior portion of lateral tibial plateau, a central portion of a medial tibial plateau, a central portion of a lateral tibial plateau, an anterior portion of medial tibial plateau, an anterior portion of lateral tibial plateau, a medial tibial spine, a lateral tibial spine, an anteromedial tibial rim, an anterolateral tibial rim, a medial tibial rim, a lateral tibial rim, a lowest point of the medial plateau, a lowest point of the lateral plateau, a highest point of the medial plateau, a highest point of the lateral plateau, an uncut medial tibial plateau surface, an uncut lateral tibial plateau surface, a cut medial tibial plateau surface, a cut lateral tibial plateau surface, an uncut femoral condyle surface, a cut femoral condyle surface, an uncut anterior femur surface, a cut anterior femur surface, or combinations thereof based at least in part on the at least one 3D anatomical model.

5. The system of claim 1 , wherein the at least one processor is configured to use a single parameter or multiple parameters for determining the degree of the fit of the virtual implant component.

6. The system of claim 1 , wherein the joint is a hip joint and wherein the at least one processor is configured to determine the degree of the fit of the virtual implant component in relationship to at least one of a peripheral margin, a dimension, a shape, a radius, a convexity, or a concavity of at least one of a portion of or an entire acetabulum, a portion of or an entire edge of an acetabulum, multiple portions of an edge of an acetabulum, a portion of an iliac wall, a portion of a pubic bone, a portion of an ischial bone, an anterior superior iliac spine, an anterior inferior iliac spine, a symphysis pubis, a portion of or an entire greater trochanter, a portion of or an entire lesser trochanter, a portion of or an entire femoral shaft, a portion of or an entire femoral neck, a portion of or an entire femoral head, a fovea capitis, a transverse acetabular ligament, a pulvinar, a ligamentum teres, a labrum, one or more osteophytes or combinations thereof based at least in part on the at least one 3D anatomical model of the hip joint.

7. The system of claim 1 , wherein the joint is a shoulder joint and wherein the at least one processor is configured to determine the degree of the fit of the virtual implant component in relationship to at least one of a peripheral margin, a dimension, a shape, a radius, a convexity, or a concavity of at least one of a portion of or an entire glenoid, a portion of or an entire coracoid process, a portion of or an entire acromion, a portion of a clavicle, a portion of or an entire humeral head, a portion of or an entire humeral neck, a portion of a humeral shaft, one or more humeral osteophytes, one or more glenoid osteophytes, a portion of or an entire glenoid labrum, a portion of or an entire shoulder ligament, a portion of a shoulder capsule, or combinations thereof based at least in part on the at least one 3D anatomical model of the shoulder joint.

8. The system of claim 1 , wherein the at least one processor is configured to select at least one virtual implant component from a library of virtual implant components.

9. The system of claim 8 , wherein the library of virtual implant components comprises at least two virtual implant components, wherein the at least two virtual implant components have different sizes.

10. The system of claim 8 , wherein the library of virtual implant components comprises at least two virtual implant components, wherein at least two virtual implant components have different shapes.

11. The system of claim 10 , wherein the shapes are symmetric or asymmetric.

12. The system of claim 8 , wherein the virtual implant components are stored in STL file format in the library of virtual implant components.

13. The system of claim 1 , wherein the artificial neural network is a discriminative artificial neural network or a generative neural network.

14. The system of claim 1 , wherein the at least one processor is configured to determine a score of implant oversizing, implant overhang or implant undersizing in relationship to the at least one anatomic structure.

15. The system of claim 14 , wherein the at least one anatomic structure comprises at least one of an uncut medial tibial plateau surface, an uncut lateral tibial plateau surface, a cut medial tibial plateau surface, a cut lateral tibial plateau surface, an uncut femoral condyle surface, a cut femoral condyle surface, an uncut anterior femur surface, a cut anterior femur surface or combinations thereof.

16. The system of claim 15 , wherein the at least one processor is configured to determine the virtual implant component overhang, virtual implant component oversizing, virtual implant component undersizing or combinations thereof in numeric values, and wherein the numeric values comprise at least one of mm, mm 2 , mm 3 or combinations thereof.

17. The system of claim 14 , wherein the at least one processor is configured to compute a risk of developing postoperative pain based on the score.

18. The system of claim 1 , wherein the joint is a knee joint and wherein the at least one processor is configured to align the virtual implant component in relationship to the at least one 3D anatomic model based at least in part on a transepicondylar axis, a Whiteside's line, a femoral bone surface, a femoral condyle surface, a femoral offset, a femoral component flexion, an anterior cortex, a tibial plateau surface, a tibial slope, a medial joint line, a lateral joint line or a combination thereof; or

wherein the joint is a hip joint and wherein the at least one processor is configured to align the virtual implant component in relationship to the at least one 3D anatomic model based at least in part on a femoral neck angle, a femoral shaft angle, an acetabular angle, an acetabular anteversion, a femoral anteversion, a femoral shaft angle, a pelvic tilt, a Shenton's line, a Hilgenreiner line, a Perkin line, or a combination thereof; or

wherein the joint is a shoulder joint and wherein the at least one processor is configured to align the virtual implant component in relationship to the at least one 3D anatomic model based at least in part on a glenoid version, a humeral version, or a combination thereof.

19. A system for preparing a physical joint for a joint replacement in a patient comprising:

at least one computer system comprising at least one processor,

wherein the at least one processor is configured to receive preoperative data, intraoperative data, or preoperative and intraoperative data of the patient undergoing joint replacement from one or more data sources,

wherein the preoperative data, intraoperative data, or preoperative and intraoperative data comprise at least a three-dimensional (3D) anatomic model based on imaging data,

wherein the at least one processor is configured to compare at least one of size, shape or combinations thereof of a virtual implant component with the at least three-dimensional (3D) anatomic model of the preoperative data, intraoperative data, or preoperative and intraoperative data, and

wherein the at least one processor is configured to select at least one of size, shape or combinations thereof of a virtual implant component based on the three-dimensional (3D) anatomic model.

20. A computer-implemented method for determining the fit of a virtual implant component for a replacement of a joint in a patient comprising:

receiving imaging data associated with the joint of the patient,

wherein the imaging data comprises at least one image of at least one anatomic structure of the joint, wherein the imaging data comprises a CT scan, an MRI scan, an ultrasound scan, data generated based on one, two or more x-rays or combinations thereof of the joint,

generating a three-dimensional (3D) anatomic model of at least a portion of the joint based on the imaging data,

accessing an electronic file of at least one virtual implant component, the at least one virtual implant component comprising at least one size and at least one shape associated with a physical implant component,

aligning the virtual implant component in relationship to the at least one 3D anatomic model based at least in part on a mechanical axis, a rotation axis, a predetermined angle, an articular surface, a slope, a joint line, or combinations thereof, and

using an artificial neural network to determine at least one measure that characterizes a degree of the fit of the virtual implant component in relationship to the at least one anatomic structure.

Continuity (1)

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