Method of providing feedback to an orthopedic alignment system

• US 9,259,172 B2
• Filed: 09/13/2013
• Issued: 02/16/2016
• Est. Priority Date: 03/18/2013
• Status: Active Grant

• Current Assignee: Howmedica Osteonics Corp. (Stryker Corporation)
• Original Assignee: OrthoSensor, Inc (Stryker Corporation)
• Inventors: Stein, Marc, Roche, Martin
• Primary Examiner(s): Yang, Andrew
• Application Number:
  US14/027,130
• Publication Number:
  US 20140276888A1
• Time in Patent Office: 886 Days
• US Class Current: 1/1
• CPC Class Codes: A61B 17/154 for preparing bone for knee prosthesis
• CPC Class Codes: A61B 17/155 Cutting femur
• CPC Class Codes: A61B 17/157 Cutting tibia
• CPC Class Codes: A61B 17/1764 for the knee
• 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 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 34/25 User interfaces for surgical systems
• CPC Class Codes: A61B 5/103 Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes A61B5/08 takes precedence; measuring aids for tailors A41H1/00; measuring instruments specially adapted for dentistry A61C19/04
• CPC Class Codes: A61B 5/1036 Measuring load distribution, e.g. podologic studies
• CPC Class Codes: A61B 5/1072 measuring distances on the body, e.g. measuring length, height or thickness A61B5/1076 takes precedence
• CPC Class Codes: A61B 5/1121 Determining geometric values, e.g. centre of rotation or angular range of movement
• CPC Class Codes: A61B 5/45 For evaluating or diagnosing the musculoskeletal system or teeth A61B5/1036, A61B5/1074, A61B7/006 take precedence
• CPC Class Codes: A61B 5/4528 Joints A61B5/4533, A61B5/4538 take precedence
• CPC Class Codes: A61B 5/4571 Evaluating the hip
• CPC Class Codes: A61B 5/4585 Evaluating the knee
• CPC Class Codes: A61B 5/4851 Prosthesis assessment or monitoring
• CPC Class Codes: A61B 5/4887 Locating particular structures in or on the body
• CPC Class Codes: A61B 5/686 : Permanently implanted devices, e.g. pacemakers, other stimulators, biochips A61B5/6861 takes precedence
• CPC Class Codes: A61B 90/37 : Surgical systems with images on a monitor during operation
• CPC Class Codes: A61F 2/38 : for elbows or knees
• CPC Class Codes: A61F 2/3836 : Special connection between upper and lower leg, e.g. constrained
• CPC Class Codes: A61F 2/461 : of knees
• CPC Class Codes: A61F 2/4657 : Measuring instruments used for implanting artificial joints for surgical instruments A61B90/06
• CPC Class Codes: A61F 2/4684 : Trial or dummy prostheses
• CPC Class Codes: A61F 2002/4658 : for measuring dimensions, e.g. length
• CPC Class Codes: A61F 2002/4668 : for measuring angles
• CPC Class Codes: G06F 3/0481 : based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance

Abstract

A method of providing feedback to a user of an orthopedic alignment system, which displays: a portion of an orthopedic system; a parameter of the orthopedic system; a portion of an orthopedic insert in the display; and a parameter of the orthopedic insert. Where the method detects movement of the orthopedic system, and moves the displayed portion of the orthopedic system in response to the movement of the orthopedic system. Where the method additionally detects changes of the parameter of the orthopedic insert and of the parameter of the orthopedic system during movement of the orthopedic system, and displays the changes of the parameter of the orthopedic insert and the parameter of the orthopedic system.

Claims

1. A method of providing feedback an orthopedic alignment system coupled to display comprising:

tracking movement of a prosthetic component wherein a tracking system is coupled to the prosthetic component;

transmitting tracking data to a computer wherein the computer is coupled to a display;

displaying a needle point graphic on the display wherein the computer is configured to receive the measurement data and wherein the needle point graphic is configured to move as the prosthetic component moves; and

measuring a parameter with the tracking data wherein the computer is configured to calculate the parameter from the measurement data.

2. The method according to claim 1, where the parameter is at least one of a CP Rotation, A-P slope, flexion angle, tibial rotation, alignment, or a tibia angle.

3. The method according to claim 1, where the prosthetic component is a component of a knee joint, where the needle point graphic is configured to track movement of the knee joint, and where movement of the knee joint is kept within a tracking grid of the needle point graphic.

4. The method according to claim 1, further including rotating the prosthetic component in an arc wherein a range of the arc is less than or equal to plus or minus 45 degrees and wherein the tracking system has 15 bit or greater accuracy.

5. The method according to claim 4, where the needle point graphic is configured to change color in response to movement where the color corresponds to a measurement range.

6. The method according to claim 1, further including:

measuring a load applied to the prosthetic component wherein one or more load sensors couple to the prosthetic component;

transmitting load data from the prosthetic component to the computer wherein the computer is configured to calculate a load magnitude from the load data; and

displaying the prosthetic component on the display wherein a load is displayed within a range on the display.

7. The method according to claim 6 further including:

measuring a position of load wherein the computer is configured to calculate a position of applied load on the prosthetic component from the load data; and

showing a position of applied load on the prosthetic component on the display.

8. The method according to claim 1 further including:

where the tracking system is in the prosthetic component.

9. The method according to claim 1 further including:

rotating the prosthetic component wherein rotation of the prosthetic component changes a contact point to a second prosthetic component;

measuring rotation from a reference position wherein the computer calculates rotation of the prosthetic component; and

displaying a rotation value of the prosthetic component from the reference position on the display.

10. A method of providing feedback an orthopedic alignment system coupled to display comprising:

tracking movement of a prosthetic component wherein a tracking system is coupled to the prosthetic component;

transmitting tracking data to a computer wherein the computer is coupled to a display;

displaying a needle point graphic within a tracking grid on the display wherein the computer is configured to receive the measurement data, wherein the needle point graphic is configured to move as the prosthetic component moves and wherein movement of the prosthetic component is kept within a range of the tracking grid;

measuring a parameter with the tracking data wherein the computer is configured to calculate the parameter from the measurement data.

11. The method of claim 10 further comprising:

rotating the prosthetic component to generate tracking data.

12. The method according to claim 10, further comprising:

transmitting tracking data as the prosthetic component is rotated;

calculating an alignment of value of the prosthetic component relative to the muscular-skeletal system from the tracking data wherein the computer is configured to calculate the alignment value; and

displaying the alignment value on the display.

13. The method according to claim 10, further comprising:

measuring position, location, and rotation with the tracking system wherein the tracking data from the tracking system has 15 bit or greater accuracy.

14. The method according to claim 10, where the needle point graphic is configured to change color in response to movement where the color corresponds to a measurement range.

15. A method of providing feedback an orthopedic alignment system coupled to display comprising:

tracking movement of an insert in a knee joint wherein a tracking system is coupled to the insert;

transmitting tracking data to a computer wherein the computer is coupled to a display;

displaying a needle point graphic within a tracking grid on the display wherein the computer is configured to receive the measurement data, wherein the needle point graphic is configured to move as the insert moves and wherein movement of insert is kept within a range of the tracking grid;

measuring a parameter with the tracking data wherein the computer is configured to calculate the parameter from the measurement data.

16. A method according to claim 15 further comprising:

transmitting tracking data as the insert is moved;

calculating an alignment of value of the insert relative to the muscular-skeletal system from the tracking data wherein the computer is configured to calculate the alignment value; and

displaying the alignment value on the display.

17. A method according to claim 15 further comprising:

measuring position, location, and rotation with the tracking system wherein the tracking data from the tracking system has 15 bit or greater accuracy.

18. A method according to claim 15,

where the needle point graphic is configured to change color in response to movement where the color corresponds to a measurement range.