This innovative anti-spastic orthosis features a 3D printed bi-directional millimeter adjustment system designed by me. Reduces recovery times by being self-adjusting to the needs of the patient at all times. All the components are made by 3D printed. It is very easy to install and doesn´t stimulate the area that we want to inhibit, the flexores of the fingers, because the traction system is in the back of the forearm. Everything is made to measure each patient. Something similar has never been used in an anti-spastic orthosis.