Method and system for pre-operative implant sizing

1. A system for sizing an implant for a patient pre-operatively comprising:

a processor unit;

a non-transitory computer-readable memory communicatively coupled to the processor unit and comprising computer-readable program instructions executable by the processor unit for

obtaining at least one radiographic patient image of at least one patient bone with a scale marker relative to the bone, the scale marker having a known geometry,

setting a scale of the at least one radiographic patient image using the known geometry of the scale marker,

generating a three-dimensional bone model representative of the at least one patient bone using the at least one radiographic patient image and the scale,

identifying an implant size and/or an implant model using implant models and dimensions of the three-dimensional bone model based on said scale, and

outputting the implant size and/or the implant model for the patient.

2. The system according to claim 1 , wherein generating a three-dimensional bone model includes obtaining a non-patient three-dimensional bone model and modifying the non-patient three-dimensional bone model using the at least one radiographic patient image and the scale.

3. The system according to claim 2 , wherein generating a three-dimensional bone model includes performing an overlap two-dimensional rendering of the non-patient three-dimensional bone model and projecting the overlap two-dimensional rendering on the at least one radiographic patient image.

4. The system according to claim 3 , further comprising a screen display, and wherein projecting the overlap two-dimensional rendering includes displaying the overlap two-dimensional rendering on the at least one radiographic patient image.

5. The system according to claim 4 , wherein displaying the overlap two-dimensional rendering on the at least one radiographic patient image includes displaying the overlap two-dimensional rendering with plane indicators showing planes of the three-dimensional bone model.

6. The system according to claim 5 , wherein displaying the overlap two-dimensional rendering with plane indicators representative of planes of the three-dimensional bone model includes displaying the plane indicators as lines forming a window for each plane.

7. The system according to claim 4 , wherein modifying the non-patient three-dimensional bone model includes receiving a user input of rotation, translation and/or scaling of the non-patient three-dimensional bone model, and updating the overlap two-dimensional rendering relative to the at least one radiographic patient image through the user input.

8. The system according to claim 4 , wherein displaying the overlap two-dimensional rendering on the at least one radiographic patient image includes displaying the overlap two-dimensional rendering on two said radiographic patient images.

9. The system according to claim 8 , wherein the at least one radiographic patient image is in a sagittal plane of the patient, and another radiographic patient image is in a frontal plane of the patient.

10. The system according to claim 3 , wherein modifying the non-patient three-dimensional bone model includes receiving a user input of rotation, translation and/or scaling of the non-patient three-dimensional bone model.

11. The system according to claim 3 , wherein obtaining a non-patient three-dimensional bone model includes obtaining the non-patient three-dimensional bone model with a virtual scale marker positioned relative to the non-patient three-dimensional bone model to match an arrangement of the at least one patient bone with its scale marker.

12. The system according to claim 11 , wherein generating the three-dimensional bone model representative of the at least one patient bone includes using the virtual scale marker with said scale.

13. The system according to claim 2 , wherein obtaining a non-patient three-dimensional bone model includes obtaining the non-patient three dimensional bone model from an atlas of bone models.

14. The system according to claim 1 , wherein outputting the implant size and/or the implant model for the patient includes outputting the three-dimensional bone model representative of the at least one patient bone.

15. The system according to claim 1 , further comprising the scale marker.

16. The system according to claim 15 , wherein the scale marker is without any symmetry plane.

17. The system according to claim 15 , wherein the scale marker has a strap whereby the scale marker is configured to be strapped to the patient.

18. The system according to claim 1 , further comprising an X-ray generator and an x-ray detector.

19. The system according to claim 18 , wherein obtaining at least one radiographic patient image of at least one patient bone includes generating the least one radiographic patient image with the X-ray generator and an x-ray detector.

20. A system for sizing an implant for a patient pre-operatively comprising:

a processor unit;

a non-transitory computer-readable memory communicatively coupled to the processing unit and comprising computer-readable program instructions executable by the processing unit for

obtaining at least one radiographic patient image of at least one patient bone with a scale marker relative to the bone, the scale marker having a known geometry,

setting a scale of the at least one radiographic patient image using the known geometry of the scale marker,

matching a three-dimensional implant model with the at least one patient bone using the at least one radiographic patient image and the scale,

identifying an implant size and/or an implant model and dimensions of the three-dimensional implant model based on said scale, and

outputting the implant size and/or the implant model for the patient.