An orthosis is made from elastic cotton cloth lined with combed cotton and its overall edges are lined with a twisted rubber. Patella is open and gap's edge is sliped over with a twisted rubber. It has plastic supports inside the straps at both sides of the knee. It can be adjusted by 4straps with velcros, 2 above patella and 2 below patella. Dark-blue knee orthosis have 7 different sizes. Indication: Used on knee internal and external ligament lesions, supporting lateral and medial and patella.