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 bone fixation system, comprising:
a bone fixation device comprising:
a stabilizing body comprising:
an obverse side;
a reverse side opposite the obverse side; and
a plurality of fastener openings extending through the obverse side and the reverse side; and
a first leg integrally formed with the stabilizing body and extending from the reverse side of the stabilizing body to a first free end; and
a second leg integrally formed with the stabilizing body and extending from the reverse side of the stabilizing body to a second free end;
wherein the first free end is separated from the second free end by a first distance when bone fixation device is in an elastically deformed state;
wherein the first free end is separated from the second free end by a second distance when the bone fixation device is in a relaxed state, the first distance being different than the second distance such that the bone fixation device provides a force at the first and second free ends when the bone fixation devices is in the elastically deformed state;
wherein a longitudinal axis of the first leg and a longitudinal axis of the second leg are configured to converge when the bone fixation device is in the relaxed state; and
wherein at least a portion of the stabilizing body between the first leg and the second leg is configured to deform when the bone fixation device transitions from the elastically deformed state to the relaxed state; and
a plurality of fasteners configured to be positioned within the one or more fasteners openings of the stabilizing body and to extend through the stabilizing body.
2. The bone fixation system of claim 1 , wherein the first distance is greater than the second distance such that the bone fixation device provides a compressive force between the first and second free ends when the bone fixation devices is in an elastically deformed state.
3. The bone fixation system of claim 1 , wherein at least a portion of the bone fixation device is formed of a superelastic material.
4. The bone fixation system of claim 3 , wherein at least a portion of the bone fixation device is formed of nitinol.
5. The bone fixation system of claim 1 , wherein the plurality of fasteners comprises a plurality of bone screws.
6. The bone fixation system of claim 1 , wherein the plurality of fasteners are configured to rotate and translate within the plurality of fastener openings.
7. The bone fixation system of claim 1 , wherein the plurality of fasteners are polyaxially positionable relative to the plurality of fastener openings.
8. The system of claim 1 , wherein the plurality of fastener openings comprise a first fastener opening and a second fastener opening.
9. The system of claim 8 , wherein the first leg extends from the stabilizing body at a first location and the second leg extends from the stabilizing body at a second location, the first location being separated from the second location by a third distance; and
wherein the first fastener opening is separated from the second fastener opening by a fourth distance, the fourth distance being greater than the third distance.
10. The system of claim 8 , wherein the first fastener opening and the second fastener opening are positioned along a longitudinal axis of the stabilizing body.
11. The system of claim 10 , wherein the first leg extends from the stabilizing body at a position between the first fastener opening and the second fastener opening relative to the longitudinal axis.
12. The system of claim 11 , wherein the second leg extends from the stabilizing body at a position between the first fastener opening and the second fastener opening relative to the longitudinal axis.
13. The system of claim 12 , wherein first leg and the second leg extend from the stabilizing body along the longitudinal axis.
14. The system of claim 8 , wherein at least one of the first fastener opening and the second fastener opening is positioned lateral to a longitudinal axis of the stabilizing body.
15. The system of claim 8 , further comprising a third fastener opening.
16. The system of claim 1 , wherein the first leg and the second leg are substantially parallel in the elastically deformed state.
17. The system of claim 1 , wherein the stabilizing body comprises a bone plate.
18. The system of claim 17 , wherein the first leg and the second leg are part of a staple integrally formed with the bone plate.
19. The system of 18 , wherein the staple comprises a bridge extending between the first leg and the second leg.