Partial foot and ankle immobilisation orthosis of the caligaloc line. It is a proven MHH ankle splint. With an immobilizing element that is anatomically designed and can be molded if necessary. It can be used 24 hours a day, as a support splint inside the shoes, or at night to immobilize the foot without shoes. The orthosis immobilizes by having an anti-supinator effect. With an integrated pronator elevation helps to relieve the external ligaments.