An enhancement device, in particular to an enlarged tibia prosthesis knee joint, which comprises a Hollow sleeve (10) that surrounds a Channel (11) that extends through the Hollow sleeve (12) from an upper part (12) to (14) of the Booster Fund To Hole (10),The Hollow sleeve (10) comprising a Wall (17) which has an inner face and an outer Face (14) and (15). According to this, The Hollow sleeve (10) comprising at least a Union bending (3), being the Union of bending (3, 3) configured to compress the channel (10).With this measure, The Hollow sleeve (10) can be compressed under external forces, which leads to a smaller width and circumference of the Hollow sleeve (10). The above leads to the formation of a Gap between the perimeter of the enhancement device (1) and the surrounding Bone material, tearing any Connection.By virtue of this measure, it can achieve a very enlarged clearance provided device (1). Moreover it provides a Removal Tool (5) which has a Grip Elements (6) for coupling and compress the enhancement device (1), and also Instruments, particularly a template Guide and Support (8), to achieve effective removal.He further refers to a method for handling the enhancement device (1).Un dispositivo de agrandamiento, en particular un agrandamiento de tibia para una endoprótesis de articulación de rodilla, que comprende un manguito hueco (10) que circunda un canal (11) que se extiende a través del manguito hueco (12) desde una parte superior (12) hasta un fondo (14) del manguito hueco (10), comprendiendo el manguito hueco (10) una pared (17) que tiene una cara interior (14) y una cara exterior (15). De acuerdo a la presente, el manguito hueco (10) comprende al menos una unión de doblado (3), estando la unión de doblado (3, 3) configurada para poder comprimir el canal (10). Con esta medida el manguito hueco (10) puede ser comprimido bajo fuerzas externas, lo cual lleva a una circunferencia y ancho mas reducido del manguito hueco (10). Lo anterior lleva a la forma
