Bone plates with dynamic elements
Bone fixation systems include various combinations of stabilizing members, dynamic elements, fasteners, and locking mechanisms. Bone plates receive dynamic bone staples and bone screws. Other dynamic elements include elbow pegs, straight pegs, and wire pegs.
1. A method for bone fixation comprising:
positioning a rigid stabilizing member adjacent to a first bone portion and a second bone portion separated by a discontinuity such that the stabilizing member extends across the discontinuity, the stabilizing member comprising an obverse side and a reverse side opposite the obverse side;
inserting a first leg of a dynamic element into the first hone portion and a second leg of the dynamic element into the second bone portion while maintaining the dynamic element in an elastically deformed state, wherein the first leg of the dynamic element and the second leg of the dynamic element extend through the reverse side of the stabilizing member;
seating the dynamic element within the stabilizing member; and
while the first leg of the dynamic element is positioned within the first bone portion and the second leg of the dynamic element is positioned within the second bone portion, allowing the dynamic element to transition towards a relaxed state so as to apply a compressive force to the first bone portion and the second hone portion across the discontinuity.
2. The method of claim 1 , further comprising transitioning the dynamic element from the relaxed state to the elastically deformed state prior to inserting the first leg of the dynamic element into the first bone portion and inserting the second leg of the dynamic element into the second bone portion.
3. The method of claim 2 , wherein transitioning the dynamic element from the relaxed state to the elastically deformed state comprises exerting an external force on the dynamic element.
4. The method of claim 3 , wherein allowing the dynamic element to transform towards a relaxed state comprises removing the external force exerted on the dynamic element.
5. The method of claim 3 , wherein exerting an external force on the dynamic element comprises applying the external force using an inserter.
6. The method of claim 1 , wherein maintaining the dynamic element in the elastically deformed state comprises maintaining the dynamic element in the elastically deformed state using an inserter.
7. The method of claim 6 , wherein allowing the dynamic element to transform towards a relaxed state comprises releasing the dynamic element from the inserter.
8. The method of claim 1 , further comprising securing the dynamic element to the stabilizing member.
9. The method of claim 1 , wherein the dynamic element comprises a bridge extending between a first bridge end and a second bridge end, wherein the first leg is coupled to the first bridge end and extends from the bridge to a first free end, and wherein the second leg is coupled to the second bridge end and extends from the bridge to a second free end.
10. The method of claim 9 , wherein the first free end is separated from the second free end by a first distance when the dynamic element is in the elastically deformed state, and wherein the first free end is separated from the second free end by a second distance when the dynamic element is in the relaxed state, the first distance being greater than the second distance.
11. The method of claim 9 , wherein allowing the dynamic element to transition from the elastically deformed state towards the relaxed state provides a compressive force between the first and the second free end.
12. The method of claim 9 , wherein the stabilizing member is configured to prevent the bridge of the dynamic element from passing through the reverse side of the stabilizing member.
13. The method of claim 9 , wherein the dynamic element comprises a first projection extending from the first bridge end and a second projection extending from the second bridge end, the projections configured to engage an inserter and facilitate placing the dynamic element in the elastically deformed state.
14. The method of claim 13 , further comprising engaging the first projection and the second projection with the inserter and applying an external force using the inserter to place the dynamic element in the elastically deformed state.
15. The method of claim 9 , wherein the stabilizing member comprises a receiver comprising at least one elongate slot in the obverse side having a first slot end and a second slot end, wherein the slot comprises at least one opening through the reverse side and wherein its perimeter is continuously surrounded by the obverse side, wherein seating the dynamic element within the stabilizing member comprises seating the bridge of the dynamic element within the elongate slot of the receiver.
16. The method of claim 1 , further comprising forming holes in the first bone portion and the second bone portion for receiving the first leg and the second leg of the dynamic element, wherein inserting the first leg of the dynamic element into the first bone portion and the second leg of the dynamic element into the second bone portion comprises inserting the first leg and the second leg into the holes formed in the first bone portion and the second bone portion.
17. The method of claim 1 , wherein the stabilizing member is a bone plate.
18. The method of claim 1 , wherein the stabilizing member is configured to prevent at least a portion of the dynamic element from passing through the reverse side of the stabilizing member.
19. The method of claim 1 , wherein the dynamic element is a bone staple.
20. The method of claim 1 , further comprising fixing the stabilizing member to the first bone portion and the second bone portion using a plurality of fasteners.