Orthopedic plate
View Patent ↗An orthopedic plate has a portion with a curved bottom surface that is designed to extend longitudinally along the bone and change the inferior curve as it advances proximally along the bone from a shallower to a sharper radius and further spirals downward as the plate advances. The plate includes a set of tabs, offset from the longitudinal axis of the plate to provide for better pullout values. The ears may be located at the terminal portion of the plate or somewhat more intermediate to the terminus of the plate, depending on the intended application. A point in the center of the central screw hole can be used to define the origin of the plate, and the angles of the screw and/or pegs holes can be referenced with Z, Y, and Z coordinates relative to this central hole.
1. An orthopedic plate, comprising: the plate having a length and extending in a longitudinal direction so as to define a longitudinal axis and having a top surface and a bottom surface that is capable of opposing a bone in use, wherein the bottom surface defines a curve in cross section in a plane transverse to the longitudinal axis and further where the curve fluidly changes at at least two points along the longitudinal axis for at least a portion of the length and wherein the plate has a first longitudinal side and a second longitudinal side and the plate includes a pair of a first tab and a second tab which respectively project from the first longitudinal side and the second longitudinal side of the plate, and the first and the second tab each have one hole that is offset along the longitudinal axis and which the hole of the first tab defines a first axis through a center of the first hole and the hole of the second tab defines a second axis through a center of the second hole and wherein the first axis and the second axis converge toward the bottom surface of the plate.
2. The orthopedic plate as set forth in claim 1 , further including a second pair of a first tab and a second tab which respectively project from the first longitudinal side and the second longitudinal side of the plates offset along the longitudinal axis and the plate includes a second pair of holes and each of the second pair of tabs includes one of said second pair of holes.
3. The orthopedic plate as set forth in claim 1 , wherein the plate further includes a head portion that has a shape that follows the contour of contours the bone along the longitudinal axis.
4. The orthopedic plate as set forth in claim 1 , wherein the plate curves along the longitudinal axis.
5. An orthopedic plate as set forth in claim 1 , wherein the plate further includes a head portion that includes a plurality of through holes.
6. An orthopedic plate as set forth in claim 1 , further including a hole which defines an origin for mapping the plate in three dimensions.
7. An orthopedic plate as set forth in claim 1 , wherein the plate spirals along the longitudinal axis.
8. An orthopedic plate which includes holes that receive one or more of screws, pegs or wires and having an internal surface that is capable of opposing a bone in use, the plate having a longitudinal axis and the internal surface having at least a portion which extends along the longitudinal axis and which defines a concave curve that changes as it advances along the bone from a shallower to a sharper radius.
9. The orthopedic plate as set forth in claim 8 wherein the concave curve further spirals downward as the plate advances proximally along the bone.
10. The orthopedic plate as set forth in claim 9 further including a set of two tabs extending away from the longitudinal axis of the plate, each one of the tabs including a through hole and the mid point of each hole being offset from the longitudinal axis of the plate.
11. The orthopedic plate as set forth in claim 10 wherein a line connecting the mid point of each hole of the tabs is not transverse to the longitudinal axis of the plate.
12. The orthopedic plate as set forth in claim 11 further including one or more through holes aligned with the longitudinal axis of the plate.
13. The orthopedic plate as set forth in claim 8 , wherein the plate further includes a head portion that follows a different contour along the longitudinal axis.
14. The orthopedic plate as set forth in claim 13 , wherein the head portion includes a plurality of through holes for fixation means.
15. The orthopedic plate as set forth in claim 13 wherein the plate has a longitudinal axis and further includes a set of two tabs extending away from the longitudinal axis of the plate, each one of the tabs including a through hole and the mid point of each hole being offset from the longitudinal axis of the plate.
16. An orthopedic plate which is designed to extend along at least a portion of a bone in a direction proximal to distal and which defines a footprint on the bone, the plate having an external surface and an internal surface that is capable of opposing the bone in use and having at least a portion which defines a concave curve that changes from a shallower to a sharper radius as it advances along the bone in the proximal to distal direction, and wherein the footprint is not a symmetrical footprint as it advances along the bone in the proximal to distal direction such that the internal surface defines a spiral, the plate further including a plurality of holes for fixation means that extend between the external surface and the internal surface.