The peculiarity is that just as in the exercises of the second block, a movement to the right of the hand translated into a movement to the left in the camera, the supero-inferior plane remained fixed, that is, a superior movement of the hand it was superior movement in the camera.

With the camera rotated on its axis, we are going to modify this behavior so that a movement of the hand to the left will mean a movement of the object closer to the camera, and a higher movement of the hand will lead to a movement to the right in the camera. camera.

​It is the most difficult of the defined spatial orientations, which is why we leave it for the last exercises of ArthroTrainer.

In arthroscopy, the orientation of the camera is essential, and that it is always in one of the cardinal points. Having the camera at a 36-degree angle, for example, will only cause hand movement to translate into movements that are difficult to predict in the camera. In some way, the image behaves in a vector way: a shift of 10 cm to the right with the camera in the same plane means a shift of 10 cm to the right with the camera. But if we have the camera tilted at 45º, a displacement in a plane will be decomposed into its vectors in the camera, so it will be difficult to orient ourselves.

​You don't have to understand this, but you do have to know that you should try to keep the camera at fixed points: 0 degrees, 90 degrees, 180 degrees... and avoid intermediate positions.

​Within all this, placement perpendicular to the work field and rotated on its axis is one of the most difficult, but one that we may sometimes need.

​In this first exercise of the third block, we are going to pass the 3 rings with both hands while handling the clamp.

Specifically in this exercise the objective is:

- Pass 3 rings from one basket to the other

- You have 45 seconds

- The approximate number of repetitions you will need to complete this exercise is 12.05 (SD 5.4 95% CI 9.28 – 14.83)