A tibial cutting block specific to the personalized patient (100), comprising: a body (100) that has a bone-oriented surface (112) that has a specific negative contour (138) of the personalized patient configured to receive (i) a part of a front side of the patient's tibia that has a corresponding positive contour, and (ii) a part of a medial side of the patient's tibia that has a corresponding positive contour so that, when viewed from above, it is defined an angle greater than zero between a criss-cross plane (162) that extends vertically from the body and a criss-cross sagittal plane (164) of the patient's tibia when portions of the patient's tibia are received at the specific personalized negative contour of the patient's body patient, and at least one flange (104, 106) extending backwards from the body, at least one tongue having a surface (140, 142) oriented towards the bone having a co Patient-specific contour (148, 150) configured to receive a portion of the proximal side of the patient's tibia that has a corresponding positive contour and further comprises a cutting guide (132) coupled to the body, in which the guide The cut has a cut groove defined therein, the cut groove having a longitudinal axis, and characterized in that the longitudinal axis (172) of the cut groove defines a perpendicular angle with the intersected sagittal plane of the patient's tibia when the Parts of the patient's tibia are received in the specific negative contour to the personalized patient of the body.Un bloque de corte tibial específico del paciente personalizado (100), que comprende: un cuerpo (100) que tiene una superficie (112) orientada hacia el hueso que tiene un contorno (138) negativo específico del paciente personalizado configurado para recibir (i) una parte de un lado anterior de la tibia del paciente que tiene un contorno positivo correspondiente, y (ii) una parte de un lado medial de la tibia del paciente que tiene un contorno positivo correspondiente de modo que, c
