Corrective joint

1. A joint, comprising:

(a) a first joint arm,

(b) a second joint arm,

which is mounted on the first joint arm such that it can pivot about a pivot axis and

which includes a spread angle with the first joint arm, which angle lies between a maximum spread angle and a minimum spread angle, determined by the design of the joint,

(c) a locking device, which, by movement of a single bar, can selectively be brought into

a locking position, in which the first joint arm and the second joint arm are locked relative to one another,

a release position, in which the first joint arm and the second joint arm can be pivoted relative to one another without restrictions between the minimum spread angle and said maximum spread angle, and

an angle-limiting position, in which

(i) the first joint arm and the second joint arm can be pivoted with respect to one another up to a predetermined stop spread angle, which is smaller than the maximum spread angle, and

(ii) pivoting to spread angles larger than the stop spread angle is blocked;

wherein the locking device comprises

(i) a stop spread angle adjustment device,

(i) the bar is arranged on the first joint arm in a definably rotationally secured fashion,

(ii) a stop and a recess are arranged on the second joint arm, and

(iii) the locking device can be brought into the locking position by engaging the bar in the recess, can be brought into the angle-limiting position by spacing the bar from the recess, and can be brought into the release position by spacing the bar further from the recess.

2. The joint as claimed in claim 1 , wherein the stop spread angle adjustment device is arranged on the second joint arm in a definably rotationally secured fashion and includes the stop and the recess.

3. The joint as claimed in claim 2 , wherein the stop spread angle adjustment device is designed as an intermediate disk with

a substantially circular upper side,

a substantially circular lower side substantially parallel to the upper side, and

a circumferential surface on which the stop and the recess or the bar is arranged.

4. The joint as claimed in claim 2 , wherein, if

the locking device is in the angle-limiting position and

the first joint arm and the second joint arm include the stop spread angle,

the bar butts against the stop and so pivoting of the first joint arm relative to the second joint arm is blocked beyond the stop spread angle.

5. The joint as claimed in claim 2 , wherein the bar engages into the recess substantially without play if the locking apparatus is in the locking position.

6. The joint as claimed in claim 2 , wherein the stop spread angle adjustment device is designed as an intermediate disk, and

the intermediate disk has teeth over at least a part of its circumference and

the locking apparatus comprises a worm, which is arranged on the first joint arm and meshes with the teeth of the intermediate disk.

7. The joint as claimed in claim 6 , wherein

the intermediate disk has teeth over at least a part of its circumference and

the locking apparatus comprises a worm, which is arranged on the first joint arm and meshes with the teeth of the intermediate disk, wherein the worm meshes with the teeth of the intermediate disk in a self-locking fashion.

8. The joint as claimed in claim 2 , wherein the stop spread angle adjustment device is designed as an intermediate disk, and the stop is formed by a region of the intermediate disk protruding radially from the pivot axis.

9. The joint as claimed in claim 2 , wherein the stop spread angle adjustment device is designed as an intermediate disk, and along the circumference of the intermediate disk,

the recess and

the stop directly adjoin one another.

10. The joint as claimed in claim 1 , wherein the joint comprises a second locking device, which can be brought into an angle-limiting position, in which

the first joint arm and the second joint arm can be pivoted with respect to one another up to a predetermined second stop spread angle and

pivoting to smaller spread angles is blocked.

11. An orthesis with

(a) a first receptacle device for a first body limb and

(b) a second receptacle device for a second body limb, which

are connected to one another such that they can pivot by means of at least one joint as claimed in claim 1 , and

include an orthesis angle.

12. The joint as claimed in claim 1 , wherein the stop spread angle adjustment device is designed as an intermediate disk, and

the intermediate disk has teeth over at least a part of its circumference and

the locking apparatus comprises a worm, which is arranged on the first joint arm and meshes with the teeth of the intermediate disk.

13. The orthesis as claimed in claim 12 , wherein the first receptacle device and the second receptacle device are connected by at least one second joint as claimed in claim 1 and in that

the first joint limits the pivoting of the first receptacle device relative to the second receptacle device in one direction in the angle-limiting position, and

the second joint limits the pivoting of the first receptacle device relative to the second receptacle device in another direction in the angle-limiting position.

14. The orthesis as claimed in claim 12 , wherein it is a knee or elbow orthesis.

15. The joint as claimed in claim 12 , wherein the worm meshes with the teeth of the intermediate disk in a self-locking fashion.

16. The joint as claimed in claim 1 , wherein the stop spread angle adjustment device is designed as an intermediate disk with

a substantially circular upper side,

a substantially circular lower side substantially parallel to the upper side, and

a circumferential surface on which the stop and the recess or the bar is arranged.

17. The joint as claimed in claim 1 , wherein, if

the locking device is in the angle-limiting position and

the first joint arm and the second joint arm include the stop spread angle,

the bar butts against the stop such that pivoting of the first joint arm relative to the second joint arm is blocked beyond the stop spread angle.

18. The joint as claimed in claim 1 , wherein the bar engages into the recess substantially without play if the locking apparatus is in the locking position.

19. The joint as claimed in claim 1 , wherein the stop is formed by a region of the intermediate disk protruding radially from the pivot axis.

20. The joint as claimed in claim 1 , wherein the stop spread angle adjustment device is designed as an intermediate disk, and along the circumference of the intermediate disk,

the recess and

the stop directly adjoin one another.