Patient-specific pre-operative planning

• US 9,345,548 B2
• Filed: 12/20/2010
• Issued: 05/24/2016
• Est. Priority Date: 02/27/2006
• Status: Active Grant

• Current Assignee: Biomet Manufacturing, LLC (Zimmer Biomet Holdings, Inc.)
• Original Assignee: Biomet Manufacturing, LLC (Zimmer Biomet Holdings, Inc.)
• Inventors: Schoenefeld, Ryan J., Uthgenannt, Brian A., Morrison, Bryan, Metzger, Robert
• Primary Examiner(s): Le, Long V
• Assistant Examiner(s): Impink, Bradley
• Application Number:
  US12/973,214
• Publication Number:
  US 20110092804A1
• Time in Patent Office: 1,982 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: A61B 17/151 for corrective osteotomy
• CPC Class Codes: A61B 17/152 for removing a wedge-shaped piece of bone
• CPC Class Codes: A61B 2034/105 Modelling of the patient, e.g. for ligaments or bones
• CPC Class Codes: A61B 2034/108 Computer aided selection or customisation of medical implants or cutting guides
• CPC Class Codes: A61B 2034/252 indicating steps of a surgical procedure
• CPC Class Codes: A61B 34/10 Computer-aided planning, simulation or modelling of surgical operations
• CPC Class Codes: A61F 2/4607 of hip femoral endoprostheses
• CPC Class Codes: A61F 2002/30617 Visible markings for adjusting, locating or measuring
• CPC Class Codes: A61F 2002/4633 for selection of endoprosthetic joints or for pre-operative planning
• CPC Class Codes: A61F 2002/4662 for measuring penetration depth
• CPC Class Codes: A61F 2002/4668 for measuring angles
• CPC Class Codes: A61F 2002/4687 Mechanical guides for implantation instruments
• CPC Class Codes: A61F 2250/0097 Visible markings, e.g. indicia
• CPC Class Codes: G06T 2207/20101 Interactive definition of point of interest, landmark or seed
• CPC Class Codes: G06T 2207/30008 Bone
• CPC Class Codes: G06T 2207/30172 Centreline of tubular or elongated structure
• CPC Class Codes: G06T 7/0014 using an image reference approach
• CPC Class Codes: G06T 7/66 of image moments or centre of gravity
• CPC Class Codes: G06T 7/73 using feature-based methods
• CPC Class Codes: G06T 7/75 involving models

Abstract

A method for pre-operative orthopedic planning includes obtaining only a high-resolution knee-joint scan of a patient, determining hip rotation center and ankle rotation center from anthropometric data based on personal data of the patient, and determining a mechanical axis of the knee joint based on the anthropometric data. The method also includes preparing at least a two-dimensional image model of the knee joint using the knee-joint scan and the determined mechanical axis, and preparing a pre-operative surgical plan based on the image of the knee joint.

Claims

1. A method for pre-operative orthopedic planning comprising:

creating a diseased bone database;

obtaining image-free personal data of a patient including age, gender, weight and height of the patient;

selecting a best-fit bone model from the diseased bone database based on the obtained image-free personal data of the patient;

transforming the best-fit bone model to a customized bone model matching the obtained image-free personal data of the patient using morphing software;

preparing a pre-operative surgical plan based on the customized bone model without obtaining image data of the patient; and

physically manufacturing a customized physical alignment guide based on the customized bone model.

2. The method of claim 1, wherein transforming the best-fit bone model to a customized bone model matching the personal data of the patient includes transforming the best-fit bone model to match a hip height of the patient.

3. The method of claim 1, wherein transforming the best-fit bone model to a bone model matching the personal data of the patient includes transforming the best-fit bone model to match a tibial height of the patient.

4. The method of claim 1, wherein transforming the best-fit bone model to a bone model matching the personal data of the patient includes transforming the best-fit bone model to match a hip angle of the patient.

5. The method of claim 1, wherein transforming the best-fit bone model to a bone model matching the personal data of the patient includes transforming the best-fit bone model to match a tibial angle of the patient.

6. The method of claim 1, wherein preparing a pre-operative surgical plan further comprises selecting an implant for the patient.

7. The method of claim 6, wherein the implant is selected from a customized or semi-customized or non-customized implant based on the customized bone model.

8. The method of claim 1, further comprising selecting a best-fit bone model from the diseased bone database including daily activity of the patient.

9. The method of claim 1, further comprising selecting a best-fit bone model from the diseased bone database including body mass index of the patient.

10. The method of claim 1, wherein the diseased bone database includes images and measurement of diseased and deformed bones and bone joints.

11. A method for pre-operative orthopedic planning comprising:

creating a diseased bone database;

obtaining image-free personal data of a patient including one or more of age, gender, disability, race, ethnicity and weight of the patient;

selecting a best-fit bone model from the diseased bone database based on the personal data of the patient;

transforming the best-fit bone model to a customized bone model by matching at least one of hip height, tibial height, hip angle and tibial angle of the patient using morphing software;

preparing a pre-operative surgical plan based on the customized bone model without obtaining image data of the patient; and

manufacturing a physical customized alignment guide based on the customized bone model.

12. The method of claim 11, wherein preparing a pre-operative surgical plan further comprises selecting an implant for the patient.

13. The method of claim 12, wherein the implant is selected from a customized or semi-customized or non-customized implant based on the customized bone model.

14. The method of claim 11, further comprising selecting a best-fit bone model from the diseased bone database including daily activity of the patient.

15. The method of claim 11, further comprising selecting a best-fit bone model from the diseased bone database including body mass index of the patient.

16. A method for pre-operative orthopedic planning comprising:

obtaining image-free personal data of a patient including one or more of age, gender, disability, race, ethnicity and weight;

selecting a best-fit bone model from a diseased bone database based on the personal data of the patient;

transforming the best-fit model to a customized bone model matching at least one of hip height, tibial height, hip angle and tibial angle of the patient using morphing software;

preparing a pre-operative surgical plan based on the customized bone model without obtaining image data of the patient; and

manufacturing a physical customized alignment guide based on the customized bone model to achieve the prepared pre-operative surgical plan.

17. The method of claim 16, further comprising creating a diseased bone database including images and measurement of diseased and deformed bones and bone joints.