Bone cutting guides for use in the implantation of prosthetic joint components

(57) A surgeon can judge the required excision characteristic now exactly rather than before by the guide for bone excision which carried out summary improvement. With the form of one enforcement, at least one copy of a guide (204) is transparent (208, 210), and he is enabled for a user to optimize excision estimate and to view excision under enforcement by that cause. With the form of another enforcement, at least one copy of the outer surface of a main part (404) is fabricated so that an interaction may be carried out to another bone or the pro thesis element relevant to a joint, and thereby with it, equipment is enabled to achieve the function of both trial and the guide for excision. Also with the form (404) of this enforcement, in order to improve viewing nature, a guide can be partially made transparent at least. Although it aimed at using it for the femur side articulatio-genus formation way at the beginning, the present invention is applicable to all the disposal that may receive profits by improvement in bone excision accuracy.