Implant Planning Using Captured Joint Motion Information

• US 20080262812A1
• Filed: 12/21/2007
• Published: 10/23/2008
• Est. Priority Date: 04/19/2007
• Status: Active Grant

• Current Assignee: MAKO Surgical Corporation (Stryker Corporation)
• Original Assignee: MAKO Surgical Corporation (Stryker Corporation)
• Inventors: Mozes, Alon, Arata, Louis, Van Vorhis, Robert, Otto, Jason
• Granted Patent: US 9,101,394 B2
• Time in Patent Office: Days
• US Class Current: 703/11
• CPC Class Codes: A61B 2034/101 Computer-aided simulation of surgical operations
• CPC Class Codes: A61B 2034/102 Modelling of surgical devices, implants or prosthesis
• CPC Class Codes: A61B 2034/104 Modelling the effect of the tool, e.g. the effect of an implanted prosthesis or for predicting the effect of ablation or burring
• CPC Class Codes: A61B 2034/105 Modelling of the patient, e.g. for ligaments or bones
• CPC Class Codes: A61B 2034/107 Visualisation of planned trajectories or target regions
• CPC Class Codes: A61B 2034/108 Computer aided selection or customisation of medical implants or cutting guides
• CPC Class Codes: A61B 2034/2055 Optical tracking systems
• 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: A61B 34/20 Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
• CPC Class Codes: A61B 90/36 Image-producing devices or illumination devices not otherwise provided for
• CPC Class Codes: A61F 2/3859 Femoral components
• CPC Class Codes: A61F 2/389 Tibial components A61F2/3868 takes 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

The description relates to surgical computer systems, including computer program products, and methods for implant planning using captured joint motion information. Data is captured representative of a range of motion of a joint associated with a particular individual, where the joint includes a first bone and a second bone. The first bone of the joint is represented and a first implant model is associated with the representation of the first bone. Based on the captured data, a relationship is determined between the first implant model and a representation of the second bone through at least a portion of the range of motion of the joint. Information is displayed representative of the determined relationship.

Claims

1. A surgical planning method comprising:

capturing data representative of a range of motion of a joint associated with a particular individual, the joint comprising a first bone and a second bone;

representing the first bone of the joint;

associating a first implant model with the representation of the first bone;

based on the captured data, determining a relationship between the first implant model and a representation of the second bone through at least a portion of the range of motion of the joint; and

displaying information representative of the determined relationship.

2. The method of claim 1, further comprising enabling a user to change a position of the first implant model.

3. The method of claim 2, further comprising:

associating the first implant model with the representation of the first bone based on the changed position; and

based on the captured data, determining a relationship between the first implant model at its changed position and a representation of the second bone through at least a portion of the range of motion of the joint

4. The method of claim 1, wherein the representation of the second bone includes a representation of a surface of the second bone, a second implant model associated with the representation of the second bone, or both.

5. The method of claim 1, wherein capturing comprises:

tracking a position of the first bone and a position of the second bone; and

recording the positions as the joint moves through the range of motion.

6. The method of claim 1, further comprising:

representing a position of the first implant model relative to a position of the representation of the second bone; and

comparing the positions at any selected angle within the range of motion of the joint, inclusive.

7. The method of claim 1, further comprising:

representing a position of the first implant model relative to a position of a second implant model associated with the second bone; and

comparing the positions at any selected angle within the range of motion of the joint, inclusive.

8. The method of claim 1, wherein determining comprises identifying an overlap, a gap, or both between the first implant model and the representation of the second bone or between the first implant model and a second implant model associated with the second bone at one or more angles within the range of motion of the joint, inclusive.

9. The method of claim 8, wherein displaying comprises displaying a calculated measurement of the overlap, the gap, or both at any selected angle or at a plurality of angles within the range of motion of the joint, inclusive.

10. The method of claim 8, wherein displaying comprises displaying of the overlap, the gap, or both in a representation of at least a portion of the joint at one or more angles within the range of motion of the joint, inclusive.

11. The method of claim 1, further comprising:

mapping at least one point on a surface of the first implant model at a plurality of angles within the range of motion of the joint, inclusive; and

aligning at least one of the mapped points with the representation of the second bone.

12. The method of claim 11, further comprising associating a second implant model with the representation of the second bone based on at least one of the mapped points.

13. The method of claim 1, wherein capturing further comprises capturing data representative of a manipulation of the joint to achieve a desired internal/external angle, varus/valgus angle, flexion angle, or any combination thereof.

14. The method of claim 13, further comprising enabling a user to manipulate placement of at least one implant model corresponding to at least a portion of an actual implant so that the determined relationship through at least a portion of the range of motion of the joint allows the desired internal/external angle, varus/valgus angle, flexion angle, or any combination thereof.

15. A computer program product, tangibly embodied in an information carrier, the computer program product including instructions being operable to cause a data processing apparatus to:

capture data representative of a range of motion of a joint associated with a particular individual, the joint comprising a first bone and a second bone;

represent the first bone of the joint;

associate a first implant model with the representation of the first bone;

determine a relationship between the first implant model and a representation of the second bone through at least a portion of the range of motion of the joint based on the captured data;

optionally associate a second implant model with the representation of the second bone; and

display information representative of the determined relationship.

16. A surgical planning method, comprising the steps of:

capturing data representative of a range of motion of a joint associated with a particular individual, the joint comprising a first bone and a second bone;

creating a representation of the joint comprising a representation of the first bone and a representation of the second bone;

superimposing a first implant model on the representation of the first bone and a second implant model on the representation of the second bone;

based on the captured data, displaying the representations of the first and second bones as the representation of the joint moves through the range of motion to determine a relationship between the first and second implant models; and

adjusting a size, a shape, a position, or any combination thereof of the first implant model, the second implant model, or both based on the determined relationship.

17. A computer program product, tangibly embodied in an information carrier, the computer program product including instructions being operable to cause a data processing apparatus to:

capture data representative of a range of motion of a joint associated with a particular individual, the joint comprising a first bone and a second bone;

create a representation of the joint comprising a representation of the first bone and a representation of the second bone;

superimpose a first implant model on the representation of the first bone and a second implant model on the representation of the second bone;

display the representations of the first and second bones as the representation of the joint moves through the range of motion to determine a relationship between the first and second implant models based on the captured data; and

adjust a size, a shape, a position, or any combination thereof of the first implant model, the second implant model, or both based on the determined relationship.

18. A surgical computing system comprising:

a computer configured to;

capture data representative of a range of motion of a joint associated with a particular individual;

represent a first bone of the joint;

associate a first implant model with the representation of the first bone; and

based on the captured data, determine a relationship between the first implant model and a representation of a second bone of the joint through at least a portion of the range of motion of the joint.

19. The surgical computing system of claim 18 further comprising a tracking system in communication with the computer, the tracking system including a detection device and one or more trackers which each include a coupling means to couple the tracker to a bone of the joint.

20. The surgical computing system of claim 18 further comprising a display in communication with the computer and configured to display information received from the computer that is representative of the determined relationship.

21. The surgical computing system of claim 18 wherein the computer is further configured to generate a user interface that enables a user to select an angle at which the determined relationship is calculated, displayed, or both.

22. The surgical computing system of claim 18 wherein the computer is further configured to generate a user interface that enables a user to change a position of the first implant model.