Bone plate with transverse screw
An apparatus for a bone fusion assembly is provided for compressing adjacent bones across a bone fusion site to encourage fusion thereof. The bone fusion assembly includes a generally elongate member comprising a plate that has one or more fixation apertures to receive fasteners that are configured to be coupled with the adjacent bones. A threaded fastener comprising a bone screw, including a head portion and a shank, is configured to traverse the bone fusion site. A slanted aperture disposed in the plate is configured to receive the bone screw at a predetermined angle with respect to a plane of the plate. The slanted aperture comprises a smooth countersunk surface and one or more teeth that are configured to cooperate with the head portion of the bone screw to compress the adjacent bones together and encourage bone fusion therebetween.
1. A method for an assembly for compressing bones across a bone fusion site, comprising:
fabricating a plate for coupling with the bones;
forming one or more fixation apertures in the plate;
configuring a slanted aperture in the plate;
wherein configuring the slanted aperture comprises:
configuring a smooth countersunk surface and one or more teeth to orient the bone screw at an angle;
and
configuring the angle to direct the bone screw across the bone fusion site so as to compress the bone fusion site;
configuring one or more fasteners for fixating the plate to the bones; and
configuring a bone screw for compressing the bone fusion site.
2. The method of claim 1 , wherein the slanted aperture is configured to receive the bone screw at an angle with respect to the plate.
3. The method of claim 1 , wherein configuring the angle includes configuring the angle to range between about 35 degrees and 45 degrees relative to the plate.
4. The method of claim 1 , wherein forming the one or more fixation apertures includes configuring the one or more fixation apertures to receive the one or more fasteners.
5. The method of claim 4 , wherein configuring the one or more fixation apertures includes configuring the one or more fixation apertures to orient the one or more fasteners substantially perpendicular to the plate.
6. The method of claim 1 , wherein fabricating the plate includes forming the plate of a semi-rigid material that possesses a tensile strength suitable for fixating the bone fusion site.
7. The method of claim 1 , wherein fabricating the plate includes configuring the plate to match an anatomical shape of the bones.
8. The method of claim 7 , wherein configuring the plate includes forming a curvature along one or more directions of the plate that matches an anatomical curvature of the bones.
9. The method of claim 8 , wherein forming the curvature includes forming a first curvature along a longitudinal direction and forming a second curvature along a lateral direction.
10. The method of claim 1 , wherein configuring the bone screw includes forming a shank having distal threads and a proximal smooth portion.
11. The method of claim 10 , wherein forming the shank includes configuring the distal threads to advance the bone screw within a bone hole drilled across the bone fusion site.
12. The method of claim 11 , wherein configuring the distal threads includes forming one or more flutes for cleaning the bone hole during rotation of the bone screw.
13. The method of claim 11 , wherein forming the shank includes configuring the proximal smooth portion to allow the bone fusion site to close as the bone screw is tightened in the bone hole.
14. The method of claim 1 , wherein configuring the bone screw includes forming a head portion having a shaped opening for receiving a tool to drive the bone screw into a bone hole drilled across the bone fusion site.
15. The method of claim 14 , wherein forming the head portion includes forming the shaped opening as a multi-lobe shape for receiving the tool.
16. The method of claim 14 , wherein forming the head portion includes configuring an inferior end of the head portion to countersink within the slanted aperture.