Intra-extra rotation
For a good stability it’s necessary to restore an equilibrium between the extra and the  intra-rotary  musculature. Bend the injured  arm  to a corner on 90 degree and using the F3 engine it’s possible to set a training of this delicate muscular area in a very gradual and precise way.
 The software of the system allows to show several information like the dynamic  R.O.M., the number of the sequences,  the angular speed and many other information.