Through this tool you should configure a system for medical use (1) to prepare a trapezoidal Cut form a joint area of a Bone with a Milling Tool (2) which can be driven in rotation around an Axis of Tool (7),With Milling Blades (6) Active Perimeter edges Milling (6) acting on an axial end referred to the tool AXIS (7), and a template part (3) which can be fixed on the Joint area to guide the Milling Tool (2), where it planned or N Cap (10, 19) that delimits the penetration depth of the Milling Tool (2),So using this system it is possible to create easily and reliably cuts in a trapezoidal cross section area of the articular Bone, also under restricted Space conditions.To achieve this goal, it is proposed that the template part (3) present a base element (4) with a Guide (12) and a Toboggan SLED (5) movable in the guide SLED (12) between two end stops along a trajectory of Guided and located in a Plane,Where in the Sleigh (5) has formed a Channel guided (18) which extends obliquely with respect to the plane of Guided towards the accommodation of the Milling Tool (2), LED transversely with respect to the Axis of the tool (7), so that the Milling Tool (2) Can freely rotate around the Axis of the tool (7).Mediante la presente se debería configurar un sistema de herramienta de uso médico (1) para preparar un recorte de forma trapecial en un área articular de un hueso con una herramienta de fresado (2) que puede ser accionada en rotación alrededor de un eje de herramienta (7), que presenta filos de fresado (6) que actúan perimetralmente y filos de fresado (6) que actúan en un extremo axial referido al eje de herramienta (7), y con una parte de plantilla (3) que puede ser fijada sobre el área articular para guiar la herramienta de fresado (2), en donde se ha previsto un tope (10, 19) que delimita la profundidad de penetración de la herramienta de fresado (2), de manera tal que mediante dicho sistema sea posible crear de manera sencilla y fiable recortes de sección transver
