To provide an implant system comprising at least one shaft capable of being fixed without the use of a cement of an artificial organ, or an artificial hip joint in this case, and a set of tools to prepare for the bone to which the shaft is to be fixed.

This implant system comprises a curved base body provided with a shaft 11 being trapezoid or rectangular in cross section, and a set of tools including a first tool that has been formed according to the curved shape of the shaft and can build a recessed part in the bone which helps hold the base body, and a second tool. When the shaft is provided with ribs 19 within the near region, and a guide body that is also included in the set of tools and has been formed according to the curved shape of the shaft for the second tool that can build the structure in the bone to help in fixing the paths for the ribs of the shaft.