The invention relates to a splint (1, 31, 51, 61, 71) for immobilising a joint, which is to be worn at the joint to be immobilised, wherein the splint (1, 31, 51, 61, 71) comprises at least one flat body (2, 32, 52, 52, 62, 72) that has at least two contact surfaces (3, 4, 33, 34, 53, 54, 63, 64, 73, 74) for limbs adjoining the joint to be immobilised. A supporting member (6, 36, 36, 36, 36, 56, 56, 68, 78) is provided, which in an outer contour (7, 37, 57, 57, 68, 68, 79) has an angular structure (8, 8, 38, 38) for adjusting and bracing an angle between the contact surfaces (3, 4, 33, 34, 53, 54, 63, 64, 73, 74) for the limbs. According to the invention at least two surfaces (13, 13, 17, 17 39, 39, 39) arranged in the assembled state of the splint (1, 31, 51, 61, 71) on the faces of the contact surfaces (3, 4, 33, 34, 53, 54, 63, 64, 73, 74) remote from the limbs are provided. At least in some sections said two surfaces are non-displaceably joined together to create a double-walled or multi-walled structure, wherein a joint axis of the joint to be immobilised forms an angle of less than 60° with a normal of the non-displaceably joined surfaces (13, 13, 17, 17 39, 39, 39).La invención se refiere a una férula (1, 31, 51, 61, 71) para la inmovilización de una articulación a portar sobre la articulación a fijar, en donde la férula (1, 31, 51, 61, 71) consiste al menos en un cuerpo plano (2, 32, 52, 52, 62, 72) que muestra al menos dos superficies de contacto (3, 4, 33, 34, 53, 54, 63, 64, 73, 74) para las extremidades limítrofes a la articulación a inmovilizar, en donde está previsto un cuerpo de apoyo (6, 36, 36, 36", 36 ", 56, 56, 68, 78) que muestra en un contorno exterior (7, 37, 57, 57, 68, 68", 79) una estructura de ángulo (8, 8, 38, 38) para el ajuste y apoyo de un ángulo entre las superficies de contacto (3, 4, 33, 34, 53, 54, 63, 64, 73, 74) para las extremidades. De acuerdo con la invención, en el estado compuesto de la férula (1, 31, 51, 61, 71) están previ