Method and apparatus for preparing for a surgical procedure

• US 8,014,984 B2
• Filed: 03/06/2008
• Issued: 09/06/2011
• Est. Priority Date: 03/06/2007
• Status: Active Grant

• Current Assignee: Cleveland Clinic Foundation
• Original Assignee: Cleveland Clinic Foundation
• Inventors: Bryan, Jason Allen, Scalise, Jason, Iannotti, Joseph P.
• Primary Examiner(s): Thangavelu; Kandasamy
• Application Number:
  US12/043,634
• Publication Number:
  US 20080269906A1
• Time in Patent Office: 1,279 Days
• Field of Search: 703/11, 703/6, 600/407, 600/443, 600/301, 128/898, 623/19.13, 623/19.12, 623/20.17, 623/17.11, 623/16.11, 606/87, 606/53, 606/86.R, 606/86, 606/63, 700/117, 382/128
• US Class Current: 703/6
• CPC Class Codes: A61B 2034/101 Computer-aided simulation of surgical operations
• CPC Class Codes: A61B 34/10 Computer-aided planning, simulation or modelling of surgical operations
• CPC Class Codes: A61B 90/36 Image-producing devices or illumination devices not otherwise provided for
• CPC Class Codes: A61F 2/30942 for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
• CPC Class Codes: A61F 2002/30948 using computerized tomography, i.e. CT scans
• CPC Class Codes: A61F 2002/30952 using CAD-CAM techniques or NC-techniques
• CPC Class Codes: G09B 23/30 Anatomical models G09B23/281 - G09B23/288 take precedence
• CPC Class Codes: G16H 50/50 for simulation or modelling of medical disorders
• CPC Class Codes: G16Z 99/00 Subject matter not provided for in other main groups of this subclass

Abstract

A method of preparing for a surgical procedure includes creating a three-dimensional bone model of a subject bone of a patient. At least a portion of the bone model is compared to at least one three-dimensional reference anatomic model. At least one structural difference between the bone model and the at least one reference anatomic model is identified. At least one desired subject bone structural change is specified to produce a modified bone model responsive to the step of identifying at least one structural difference between the bone model and the at least one reference anatomic model. An apparatus for preparing for a surgical procedure is also provided.

Claims

1. A non-transitory computer readable storage medium storing computer executable instructions which when executed on a computer perform a method comprising:

creating a three-dimensional bone model of a subject bone of a patient;

comparing at least a portion of the bone model to at least one three-dimensional reference anatomic model, wherein the at least one three-dimensional reference anatomic model is a negative space reference anatomic model representing the shape of a void in an anatomically normal bone corresponding to the subject bone of the patient, and the step of comparing at least a portion of the bone model to at least one three-dimensional reference anatomic model includes the step of mating the at least one reference anatomic model to the bone model;

identifying at least one structural difference between the bone model and the at least one reference anatomic model; and

specifying at least one desired subject bone structural change to produce a modified bone model responsive to the step of identifying the at least one structural difference between the bone model and the at least one reference anatomic model, the modified bone model incorporating the at least one desired subject bone structural change configured to bring the subject bone of the patient closer to a normal anatomic bone structure represented by the at least one reference anatomic model.

2. The computer readable storage medium of claim 1, further including instructions for:

comparing at least a portion of the modified bone model to the at least one reference anatomic model;

identifying at least one structural difference between the modified bone model and the at least one reference anatomic model; and

specifying at least one desired subject bone structural change to produce a second modified bone model responsive to the step of identifying the at least one structural difference between the modified bone model and the at least one reference anatomic model, the second modified bone model incorporating the at least one desired subject bone structural change configured to bring the subject bone of the patient closer to the normal anatomic bone structure represented by the at least one reference anatomic model.

3. The computer readable storage medium of claim 1, further including instructions for associating at least one of the bone model and the modified bone model with a three-dimensional prosthetic model of a prosthetic bone component.

4. The computer readable storage medium of claim 3, wherein the step of associating at least one of the bone model and the modified bone model with a three-dimensional prosthetic model of a prosthetic bone component includes the step of identifying at least one desired subject bone structural change needed to mate the at least one of the bone model and the modified bone model with the prosthetic model.

5. The computer readable storage medium of claim 4, further including instructions for adapting the subject bone of the patient to mate with the prosthetic bone component responsive to the step of identifying at least one desired subject bone structural change needed to mate the at least one of the bone model and the modified bone model with the prosthetic model.

6. The computer readable storage medium of claim 1, further including instructions for creating a custom prosthetic bone component responsive to the step of identifying at least one structural difference between the bone model and the at least one reference anatomic model.

7. The computer readable storage medium of claim 1, further including instructions for choosing one of a plurality of predefined prosthetic bone components responsive to the step of identifying at least one structural difference between the bone model and the at least one reference anatomic model.

8. The computer readable storage medium of claim 1, wherein the step of comparing the at least a portion of the bone model to the at least one three-dimensional reference anatomic model includes the steps of:

choosing one of a plurality of predefined three-dimensional reference anatomic models; and

comparing at least a portion of the bone model to the chosen reference anatomic model.

9. The computer readable storage medium of claim 1, wherein the subject bone is at least a portion of a joint.

10. The computer readable storage medium of claim 1, wherein the subject bone is at least a portion of a fixed skeletal component.

11. A method of performing a shoulder arthroplasty, the method comprising the steps of:

providing a scapula of a patient, the scapula being a subject bone;

creating, using a computer, a three-dimensional bone model of at least a portion of the scapula of the patient;

comparing, using the computer, at least a portion of the bone model to at least one three-dimensional reference anatomic model, wherein the at least one three-dimensional reference anatomic model is a predefined glenoid vault negative space model, and the step of comparing at least a portion of the bone model to at least one three-dimensional reference anatomic model includes the step of mating the predefined glenoid vault negative space model with a glenoid vault portion of the bone model of the scapula;

identifying, using the computer, at least one structural difference between the bone model and the at least one reference anatomic model;

specifying, using the computer, at least one desired subject bone structural change to produce a modified bone model responsive to the step of identifying the at least one structural difference between the bone model and the at least one reference anatomic model, the modified bone model incorporating the at least one desired subject bone structural change configured to bring the subject bone of the patient closer to a normal anatomic bone structure represented by the at least one reference anatomic model;

selecting a prosthetic shoulder joint component based at least partially upon the predefined glenoid vault negative space model;

adapting the scapula of the patient responsive to the step of specifying at least one desired subject bone structural change to produce a modified bone model; and

mating the scapula with the prosthetic shoulder joint component.

12. The method of claim 11, including the steps of:

comparing at least a portion of the modified bone model to the at least one reference anatomic model;

identifying at least one structural difference between the modified bone model and the at least one reference anatomic model; and

specifying at least one desired subject bone structural change to produce a second modified bone model responsive to the step of identifying the at least one structural difference between the modified bone model and the at least one reference anatomic model, the second modified bone model incorporating the at least one desired subject bone structural change configured to bring the subject bone of the patient closer to a normal anatomic bone structure represented by the at least one reference anatomic model.

13. The method of claim 11, wherein the step of associating at least one of the bone model and the modified bone model with a three-dimensional prosthetic model of a prosthetic shoulder joint component includes the step of identifying at least one desired subject bone structural change needed to mate the at least one of the bone model and the modified bone model with the prosthetic model.

14. The method of claim 11, including the step of creating a custom prosthetic shoulder joint component responsive to the step of identifying the at least one structural difference between the bone model and the at least one reference anatomic model.

15. The method of claim 11, including the step of choosing one of a plurality of predefined prosthetic shoulder joint components responsive to the step of identifying the at least one structural difference between the bone model and the at least one reference anatomic model.

16. The method of claim 11, wherein the step of comparing at least a portion of the bone model to at least one three-dimensional reference anatomic model includes the steps of:

choosing one of a plurality of predefined three-dimensional reference anatomic models; and

comparing at least a portion of the bone model to the chosen reference anatomic model.

17. The method of claim 11, including the steps of:

creating, using the computer, three-dimensional prosthetic model of the prosthetic shoulder joint component;

associating, using the computer, at least one of the bone model and the modified bone model with the three-dimensional prosthetic model of the prosthetic shoulder joint component.

18. A joint surgery preparation tool, comprising:

means for creating a three-dimensional bone model of a subject bone of a patient;

means for comparing at least a portion of the bone model to at least one three-dimensional reference anatomic model, wherein the at least one reference anatomic model is a negative space reference anatomic model, representing the shape of a void in an anatomically normal bone corresponding to the subject bone of the patient, the means for comparing including means for mating the at least one reference anatomic model to the bone model;

means for identifying at least one structural difference between the bone model and the at least one reference anatomic model; and

means for specifying at least one desired subject bone structural change to produce a modified bone model responsive to the means for identifying the at least one structural difference between the bone model and the at least one reference anatomic model, the modified bone model incorporating at least one desired subject bone structural change configured to bring the subject bone of the patient closer to a normal anatomic bone structure represented by the at least one reference anatomic model.

19. The joint surgery preparation tool of claim 18, including means for displaying the bone model.

20. The joint surgery preparation tool of claim 18, including:

means for comparing at least a portion of the modified bone model to the at least one reference anatomic model;

means for identifying at least one structural difference between the modified bone model and the at least one reference anatomic model; and

means for specifying at least one desired subject bone structural change to produce a second modified bone model responsive to the means for identifying the at least one structural difference between the modified bone model and the at least one reference anatomic model, the modified bone model incorporating the at least one desired subject bone structural change configured to bring the subject bone of the patient closer to a normal anatomic bone structure represented by the at least one reference anatomic model.

21. The joint surgery preparation tool of claim 18, including means for associating at least one of the bone model and the modified bone model with a three-dimensional prosthetic model of a prosthetic joint component.

22. The joint surgery preparation tool of claim 21, wherein the means for associating includes means for identifying at least one desired subject bone structural change needed to mate the at least one of the bone model and the modified bone model with the prosthetic model.

23. The joint surgery preparation tool of claim 21, including means for adapting the subject bone of the patient to mate with the prosthetic joint component.

24. The joint surgery preparation tool of claim 18, including means for creating a custom prosthetic joint component responsive to identifying the at least one structural difference.

25. The joint surgery preparation tool of claim 18, including means for choosing one of a plurality of predefined prosthetic joint components responsive to identifying the at least one structural difference.

26. The joint surgery preparation tool of claim 18, wherein the means for comparing at least a portion of the bone model to at least one three-dimensional reference anatomic model includes:

means for choosing one of a plurality of predefined three-dimensional reference anatomic models; and

means for comparing at least a portion of the bone model to the chosen reference anatomic model.