Stabilization systems
Devices, systems, and methods of bone stabilization. The bone stabilization system includes a bone plate having an upper surface and a lower surface configured to be in contact with bone, the bone plate having an opening extending from the upper surface to the lower surface. The opening is configured to receive a fastener, which may be either a locking fastener or a compression fastener. The locking fastener has a threaded head portion configured to engage and lock to the bone plate, and the compression fastener is configured to dynamically compress the bone.
1. A method of dynamically compressing first and second bone fragments together, the method comprising:
placing a bone plate having a longitudinal axis against the first bone fragment, the bone plate having an upper surface and a lower surface, the lower surface positioned in contact with the first bone fragment;
inserting a non-locking fastener through an elongated slot in the bone plate and into the first bone fragment, the elongated slot extending from the upper surface to the lower surface;
tightening the non-locking fastener, wherein the elongated slot is configured with a curved ramp adapted to contact the non-locking fastener such that tightening the non-locking fastener causes the non-locking fastener to travel from an outer end of the elongated slot to a center of the elongated slot as a final position in a longitudinal direction along the longitudinal axis, resulting in the first bone fragment moving toward the second bone fragment and providing dynamic compression of the bone; and
fully securing the fastener to the first bone fragment, thereby securely seating the non-locking fastener within the center of the elongated slot as the final position of the non-locking fastener.
2. The method of claim 1 , wherein the elongated slot includes an upper tapered surface extending from the upper surface of the plate, a lower tapered surface extending from the lower surface of the plate, and an intersection between the upper tapered surface and the lower tapered surface forming a narrowed central portion defining a part of the ramp.
3. The method of claim 2 , wherein the narrowed central portion is downwardly curved such that a head portion of the non-locking fastener is urged into the center of the slot as the fastener is secured further into the first bone fragment.
4. The method of claim 1 , wherein the non-locking fastener has a head portion that is substantially smooth around its outer surface.
5. The method of claim 1 , wherein the bone plate has an elongate body extending from a first end to a second end along a central longitudinal axis.
6. The method of claim 5 , wherein the bone plate comprises a plurality of elongated slots arranged along the central longitudinal axis of the plate.
7. The method of claim 1 , wherein the bone plate further comprises a stacked hole comprising a conical chamfer extending from the upper surface and terminating in a conically threaded hole.
8. The method of claim 7 , wherein the stacked hole includes a second conical chamfer extending from the lower surface to allow for variable trajectories of the non-locking fastener.
9. The method of claim 5 , wherein the bone plate further comprises a plurality of k-wire holes extending from the upper surface to the lower surface and each configured to receive a k-wire.
10. The method of claim 9 , wherein the plurality of k-wire holes are provided along the central longitudinal axis of the plate, the k-wire holes alternating between each of the elongated slots.
11. The method of claim 9 , wherein the bone plate further comprises a plurality of conical cuts along the lower surface of the plate.
12. The method of claim 11 , wherein the conical cuts are positioned on either side of the k-wire holes and extend outward towards the side surfaces of the plate.
13. The method of claim 5 , wherein the bone plate is a substantially straight plate.
14. The method of claim 5 , wherein the bone plate is a one-third tubular plate.
15. The method of claim 5 , wherein the bone plate is a T-plate or cloverleaf plate.
16. The method of claim 1 , wherein the bone plate further comprises an additional opening having an inset portion in the upper surface of the plate.
17. The method of claim 16 , further comprising placing a suture button into the inset portion and adjacent to the additional opening and threading a tether through the suture button, through the additional opening, and into the bone, thereby firmly securing the plate to the bone.
18. The method of claim 1 , wherein the elongated slot is non-threaded.
19. A method of dynamically compressing first and second bone fragments together, the method comprising:
placing a bone plate having a longitudinal axis against the first bone fragment, the bone plate having an upper surface and a lower surface, the lower surface positioned in contact with the first bone fragment;
inserting a non-locking fastener through an elongated slot in the bone plate and into the first bone fragment, the elongated slot extending from the upper surface to the lower surface;
tightening the non-locking fastener, wherein the elongated slot is configured with a tapered ramp adapted to contact the non-locking fastener, the tapered ramp having a lowest point at the center of the elongated slot such that tightening the non-locking fastener causes the non-locking fastener to travel from an outer end of the elongated slot to a center of the elongated slot in a longitudinal direction along the longitudinal axis, resulting in the first bone fragment moving toward the second bone fragment and providing dynamic compression of the bone; and
fully securing the fastener to the first bone fragment, thereby securely seating the non-locking fastener within the center of the elongated slot.