Positioning System for Robotic Knee Testing Apparatus and Method of Using Same

1 . A robotic knee testing apparatus comprising:

a robot configured to support a leg of a patient;

a patient support configured to support the patient thereon; and

a positioning system adjustably connected to the patient support and movable relative to the patient support,

wherein the positioning system is movable to adjust a position of the robot so as to allow the patient to be situated in an orthostasis position between a distal edge of the patient support and the robot.

2 . A robotic knee testing apparatus of claim 1 , wherein the positioning system is movable to adjust a vertical position of the robot.

3 . A robotic knee testing apparatus of claim 1 , wherein the positioning system further comprises a column lift supporting the robot, the column lift being operable to adjust a vertical position of the robot relative to the patient support.

4 . A robotic knee testing apparatus of claim 3 , wherein the column lift includes an inner segment and an outer segment telescopically connected relative to one another.

5 . A robotic knee testing apparatus of claim 1 , wherein the positioning system is movable to adjust a horizontal position of the robot toward and away from the patient support.

6 . A robotic knee testing apparatus of claim 1 , wherein the positioning system further comprises a guide such that a portion of the positioning system is slidable relative to the patient support.

7 . A robotic knee testing apparatus of claim 6 , wherein the guide includes at least one guide rod with a first end fixed to a base of the positioning system and a second end.

8 . A robotic knee testing apparatus of claim 7 , wherein the second end of at least one guide rod is slidably coupled to a portion of the patient support.

9 . A robotic knee testing apparatus of claim 6 , wherein the guide includes a pair of the guide rods.

10 . A robotic knee testing apparatus of claim 1 , wherein the positioning system further comprises a locking mechanism to lock the positioning system in a selected position so as to fix the position of the robot relative to the patient support.

11 . A robotic knee testing apparatus of claim 1 , further comprising a step tread attached to the patient support and located between the patient support and the positioning system.

12 . A robotic knee testing apparatus of claim 1 , wherein a portion of the robot is positioned beneath a knee of the leg when the patient is situated in a supine position on the patient support.

13 . A robotic knee testing apparatus comprising:

a robot configured to evaluate a knee of a patient;

a patient support configured to support the patient thereon; and

a positioning system adjustably connected to the patient support and movable relative to the patient support,

wherein the positioning system is movable to adjust a vertical position of the robot relative to the patient support.

14 . A robotic knee testing apparatus of claim 13 , wherein the positioning system is movable to reposition the robot spaced from a distal edge of the patient support to allow the patient to pass between the distal edge of the patient support and the robot to get up onto the patient support.

15 . A robotic knee testing apparatus of claim 13 , wherein the positioning system includes a guide with at least one guide rod with a first end attached to a base of the positioning system and a second end slidably coupled to the patient support, the guide permitting the robot to move relative to the patient support in a horizontal direction.

16 . A robotic knee testing apparatus of claim 13 , wherein the vertical position of the robot is adjustable to permit a knee of the patient to be in flexion in a range of 0 degrees to 90 degrees.

17 . A robotic knee testing apparatus of claim 13 , wherein the positioning system further includes a column lift with first and second column segments that are telescopically connected to one another to adjust the vertical position of the robot.

18 . A robotic knee testing apparatus of claim 13 , wherein positioning system further includes a guide permitting the robot to move relative to the patient support in a horizontal direction, and a locking mechanism to lock the positioning system in a selected horizontal position so as to fix the horizontal position of the robot relative to the patient support.

19 . A knee examination method comprising the steps of:

positioning a patient adjacent a robotic knee testing apparatus having a patient support and a robot;

moving a positioning system that supports the robot in a horizontal direction away from the patient support to create a gap between a distal edge of the patient support and the robot;

situating the patient within the gap so that the patient can climb onto the patient support; and

adjusting a horizontal position of the robot relative to the patient support using the positioning system to close the gap.

20 . A knee examination method of claim 19 , further comprising the steps of:

repositioning the patient in a supine position on the patient support; and locating a knee stabilizer of the robot under a knee of the patient to support the knee.

21 . A knee examination method of claim 19 , further comprising the steps of:

engaging a foot of the patient in a foot plate of the robot; and

further adjusting a vertical position of the robot relative to the patient support to place the knee of the patient in a desired degree of flexion.

22 . A knee examination method of claim 21 , wherein the step of further adjusting results in flexion of the knee in a range of 0 degrees to 90 degrees.