Hinge for an orthopedic device

1. A hinge, comprising:

an upper hinge component;

a lower hinge component;

a first plate pivotally connected at a first location point to the upper hinge component and connected at a second location point to the lower hinge component;

a second plate pivotally connected at the first location point to the upper hinge component and at the second location point to the lower hinge component;

a first rotation stop connected at a third location point to the first and second plates; and

a center link has a first end pivotally attached at a fourth location point to the upper hinge component and a second end pivotally attached at a fifth location point to the lower hinge component, the center link having a first stop surface arranged to directly abut the first rotation stop;

wherein the hinge components and the center link are arranged between the first plate and the second plate;

wherein the first stop surface is located solely between the fourth and fifth location points.

2. The hinge according to claim 1 , wherein the first rotation stop comprises a stop pin and a stop cover.

3. The hinge according to claim 2 , wherein the first stop surface and the first stop cover have geometrically complementary surface shapes.

4. The hinge according to claim 1 , further comprising: a second rotation stop including a second stop pin and a second stop cover connected at a sixth location point to the first and second plates, wherein the center link has a second stop surface arranged to directly abut the second stop cover.

5. The hinge according to claim 4 , wherein the second stop surface and the second stop cover have geometrically complementary surface shapes.

6. The hinge according to claim 1 , wherein the first rotation stop is an extension stop.

7. The hinge according to claim 1 , wherein the hinge is symmetrical regarding a central plane of rotation.

8. The hinge according to claim 1 , wherein the connection of the center link at the fourth location point rotates around the first location point and the connection of the center link at the fifth location point rotates around the second location point.

9. The hinge according to claim 1 , wherein the upper hinge component and the lower hinge component are in recesses of the center link.

10. The hinge according to claim 1 , wherein the first plate is identical to the second plate.

11. The hinge according to claim 1 , further comprising a cover secured to and located adjacent to the second plate.

12. The hinge according to claim 1 , further comprising: a condyle plate secured to and located adjacent to the first plate.

13. The hinge according to claim 1 , wherein a condyle plate has a retention area partially corresponding to a shape of the first plate.

14. The hinge according to claim 1 , wherein a condyle plate has an enlarged opening at the third location point.

15. The hinge according to claim 1 , wherein the first stop surface is located along only a first side of the center link.

16. The hinge according to claim 1 , wherein the center link defines a second stop surface arranged to directly abut a second rotation stop, and located on an opposite side of the center link to the first stop surface.

17. The hinge according to claim 1 , wherein the center link defines a non-linear profile including a curvature between the fourth and fifth location points.

18. The hinge according to claim 1 , wherein the first stop surface is substantially flat and the first stop cover has geometrically complementary surface shapes to the first stop surface.

19. A hinge, comprising:

an upper hinge component connected with a first pivoting connection to a first plate and a second plate;

a lower hinge component connected with a second pivoting connection to the first plate and the second plate;

a first rotation stop; and

a center link connected with a third pivoting connection to the upper hinge component and a fourth pivoting connection to the lower hinge component, the center link abutting the first rotation stop at a predetermined hinge angle, the center link defining a substantially flat first stop surface arranged to directly abut the first rotation stop and located solely between the third and fourth pivoting connections;

wherein the upper hinge component, the lower hinge component, and the center link are vertically aligned to have the same plane of rotation, and

wherein the center link and the first rotation stop apply symmetric loading of the hinge regarding the plane of rotation.

20. A hinge, comprising:

an upper hinge component;

a lower hinge component;

a first plate pivotally connected at a first location point to the upper hinge component and connected at a second location point to the lower hinge component;

a second plate pivotally connected at the first location point to the upper hinge component and at the second location point to the lower hinge component;

a first rotation stop connected at a third location point to the first and second plates; and

a center link pivotally attached at a fourth location point to the upper hinge component and at a fifth location point to the lower hinge component, the center link forming a substantially flat first stop surface arranged to directly abut the first rotation stop and located solely between the fourth and fifth location points along a first side of the center link;

wherein the hinge components and the center link are arranged between the first plate and the second plate.