Claims
- 1. A longitudinal bone plate comprising:
a curved lower surface having a radius of curvature smaller than 10 mm; a ratio F/d of the total area F of an upper surface, including a surface area defining a plurality of through holes, to a thickness d of the plate is in a range of 190 to 270 mm; and a central part of the longitudinal bone plate with a generally constant width B, wherein the width of the free ends of the longitudinal plate narrows to a value b less than 0.3 B.
- 2. The bone plate of claim 1, wherein the radius of curvature is smaller than 9 mm.
- 3. The bone plate of claim 1, wherein the ratio F/d is in the range of 210 to 240 mm.
- 4. The bone plate of claim 1, wherein a ratio F/f of the total area F of the upper surface, including the surface area of the through holes to a true surface f of the upper surface, excluding the surface area of the through holes, is in a range of 1.10-1.25.
- 5. The bone plate of claim 1, wherein the width of the free ends of the longitudinal plate is narrowing to a value b less than 0.15 B.
- 6. The bone plate of claim 1, wherein the upper surface has a roughness of 0.5 μm to 5.0.
- 7. The bone plate of claim 1, wherein the upper surface is smoother than the lower surface.
- 8. The bone plate of claim 1, wherein the plate is provided with a torsion around its central longitudinal axis.
- 9. The bone plate of claim 8, wherein the length of the central part of the longitudinal plate corresponds to 73-82% of a total length L of the plate.
- 10. The bone plate of claim 1, wherein the through holes have a cone angle of 15° to 25°.
- 11. The bone plate of claim 10, wherein the through holes are provided with a thread.
- 12. The bone plate of claim 10, wherein the through holes have a smooth inner surface.
- 13. The bone plate of claim 1, wherein the plate defines at least 4 holes and the two most centrally located holes are spaced a distance which is at least 120% of the distance between the other holes.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of the U.S. national stage designation of copending International Patent Application PCT/CH99/00582, filed Dec. 6, 1999, the entire content of which is expressly incorporated herein by reference thereto.
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
PCT/CH99/00582 |
Dec 1999 |
US |
Child |
10162658 |
Jun 2002 |
US |