An arrangement for the preparation of the proximal surface of the tibia for a tibia component of a prosthetic knee joint, wherein the arrangement includes a preparation plate that assists in defining a reference plane. A cutting guide arrangement includes an indicator that provides orientation for a cutting blade or saw to cut the final bone resection of the proximal surface of the tibia the same as the reference plane. There is also a mounting arrangement between the joint liner and the cutting guide arrangement, so that in a first mounting position the indicator of the cutting guide is aligned with the same referenced plane defined by the underside of the joint liner and wherein the mounting arrangement also provides a second mounted position wherein the indicator of the cutting guide is aligned with the same referenced plane orientation of the underside of the joint liner but below the initial resected proximal surface of the tibia where the final resection of bone will take place.
