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 which is designed to extend along at least a portion of a bone in a direction proximal to distal so as to define a foot print the plate having an internal surface that is capable of opposing the bone in use, the plate having an external surface and an internal surface having an elongate portion and a head portion, at least a portion of the elongate portion defining a concavely curving area that changes from a shallower to a sharper radius as it advances in the proximal to distal direction, and wherein the footprint is not a bilaterally symmetrical footprint as it advances 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.
2. An orthopedic plate as set forth in claim 1 , further comprising: the plate having a complex curving fully contoured configuration that is generated using computer generated imaging and the elongate portion extending in a long direction so as to define a longitudinal axis in the long direction and having a top surface and a bottom surface wherein the bottom surface defines a first curve in cross section in a plane transverse to the longitudinal axis at a first point on the longitudinal axis and a second curve in cross section in a plane transverse to the longitudinal axis at a second point, said first point being spaced apart from said second point on said longitudinal axis to define a length and further where the configuration fluidly changes in cross-section for the length from the first curve to the second curve.
3. The orthopedic plate as set forth in claim 2 , having at least one pair of holes that are offset from the longitudinal axis and which each define an axis through the center of the hole which together define a pair of axes that converge in the direction of the bottom of the plate.
4. The orthopedic plate as set forth in claim 3 , wherein the plate has a first longitudinal side and a second longitudinal side and the plate further 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 each include one of said pair of offset holes.
5. The orthopedic plate as set forth in claim 4 , 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 plate and the plate includes a second pair of offset holes and each of the second pair of tabs includes one of said second pair of offset holes.
6. The orthopedic plate as set forth in claim 2 , wherein the head portion follows a different contour along the longitudinal axis.
7. The orthopedic plate as set forth in claim 2 , wherein the plate curves along the longitudinal axis.
8. An orthopedic plate as set forth in claim 2 , wherein the plate further includes a point which is used to define the origin of the plate with reference to X,Y, Z, coordinates and the topography of the plate is generated using this coordinate system.
9. An orthopedic plate as set forth in claim 1 , further which includes holes that receive one or more of screws, pegs or wires the elongate portion extending in a long direction so as to define a longitudinal axis in a long direction so as to define 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 in accordance with a topography generated by computer generated imaging as it advances along the longitudinal axis from a shallower to a sharper radius.
10. The orthopedic plate as set forth in claim 9 , wherein the concave curve further spirals downward as the plate advances proximally.
11. The orthopedic plate as set forth in claim 10 , 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.
12. The orthopedic plate as set forth in claim 11 , wherein a line connecting the mid point of each hole of the tabs is not transverse to the longitudinal axis of the plate.
13. The orthopedic plate as set forth in claim 12 , further including one or more through holes aligned with the longitudinal axis of the plate.
14. The orthopedic plate as set forth in claim 9 , wherein the head portion follows a different contour along the longitudinal axis.
15. The orthopedic plate as set forth in claim 14 , wherein the head portion that includes a plurality of through holes for fixation means.
16. The orthopedic plate as set forth in claim 14 , 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.