System and method for bone fixation

1. A fixation system for coupling a first bone and a second bone together, said fixation system comprising:

a first fixation screw having a tapered external surface configured to engage the first bone, the first fixation screw including a first cavity at least partially including a first tapered mating recess formed in a wide end of the first fixation screw, wherein the wide end of the first fixation screw is secured to a first body portion of an interconnect and is contiguous with a narrow end of the first fixation screw, wherein the first cavity further comprises a keyed region configured to rotate the first fixation screw into the first bone;

a second fixation screw having a tapered external surface configured to engage the second bone, the second fixation screw including a second cavity at least partially including a second tapered mating recess formed in a wide end of the second fixation screw, wherein the wide end of the second fixation screw is secured to a second body portion of the interconnect and is contiguous with a narrow of the second fixation screw, wherein the second cavity further comprises a keyed region configured to rotate the second fixation screw into the second bone; and

the interconnect comprising a first tapered surface and a second tapered surface disposed at generally opposite ends, said first tapered surface and said second tapered surface are configured to frictionally engage said first tapered mating recess and said second tapered mating recess of said first fixation screw and said second fixation screw, respectively, to form frictional interference connections therebetween; and wherein the interconnect also including a flexible region formed between the first tapered surface and the second tapered surface to enable the first fixation screw to bend with respect to the second fixation screw.

2. The fixation system of claim 1 , wherein the flexible region having cross-sectional dimension to provide a range of flexibility based on an original anatomical joint of a patient.

3. The fixation system of claim 2 , wherein the range of flexibility is between 0 degrees to 60 degrees, inclusive of 0 degrees and 60 degrees and all angles in between.

4. The fixation system of claim 1 , wherein the flexible region having a cross-sectional dimension to enable flexibility only in one plane.

5. The fixation system of claim 1 , wherein the flexible region having a generally rectangular cross-sectional shape, wherein a short axis of the rectangular cross-sectional shape is dimensioned to provide flexibility in a plane defined by the short axis.

6. The fixation system of claim 5 , wherein a long axis of the generally rectangular cross-sectional shape is dimensioned to limit flexibility in a plane defined by the long axis.

7. The fixation system of claim 1 , wherein the flexible region is formed of, at least in part, nickel titanium alloys.

8. The fixation system of claim 1 , wherein the flexible region has a cross-sectional shape that is overall smaller compared to a cross-sectional shape of the first and second tapered surfaces.

9. The fixation system of claim 1 , wherein the flexible region having length dimension to provide a range of flexibility based on an original anatomical joint of a patient.

10. The fixation system of claim 1 , wherein the flexible region having a generally oval cross-sectional shape, wherein a short axis of the oval cross-sectional shape is dimensioned to provide flexibility in a plane defined by the short axis.

11. The fixation system of claim 10 , wherein a long axis of the oval cross-sectional shape is dimensioned to limit flexibility in a plane defined by the long axis.

12. The fixation system of claim 1 , wherein a length of the first fixation screw is approximately equal to a length of the second fixation screw.

13. The fixation system of claim 1 , wherein the first fixation screw further includes a cannulated passage extending from the wide end through the narrow end of the first fixation screw.

14. The fixation system of claim 1 , wherein the first fixation screw having threads disposed on the tapered external surface to engage the first bone.

15. The fixation system of claim 1 , wherein the second fixation screw having threads disposed on the tapered external surface to engage the second bone.

16. The fixation system of claim 1 , wherein the flexible region comprises a shape memory material.

17. The fixation system of claim 1 , wherein the flexible region comprises a superelastic material.

18. The fixation system of claim 1 , wherein the interconnect having a length dimension that is selected such that, when the first and second fixation screws are installed into the first and second bones, respectively, and coupled together via the interconnect, a distance between the first and second bones approximates an original anatomical distance between the first and second bones.

19. The fixation system of claim 1 , wherein the flexible region comprises one or more ribs and/or grooves along the length of the flexible region.

20. The fixation system of claim 1 , wherein the interconnect, the first fixation screw and the second fixation screw, when coupled together, have an overall length of approximately 5 mm to 20 mm, inclusive, and an overall diameter of approximately 0.5 mm to 4 mm, inclusive.

21. The fixation system of claim 1 , wherein the first fixation screw wide end further comprises at least one notch is configured to receive an element to cause rotation of the first fixation screw into the first bone; and wherein the second fixation screw wide end further comprises at least one notch is configured to receive the element to cause rotation of the second fixation screw into the second bone.