Tool system for removing prosthetic cement from a bone of a patient undergoing a joint prosthesis replacement operation

A tool system comprising a guide member and cutting tool for removing prosthetic cement from a bone of a patient undergoing a joint prosthesis replacement operation,

• wherein the cutting tool is configured for forming a running cut substantially completely through the prosthetic cement along a line of intersection, wherein at least one profile of the line of intersection of a prosthetic cement/bone interface at its intersection with a generally longitudinally pre-selected plane is obtained by scanning the patient in the area of the joint prothesis;
• wherein the cutting tool has dimensions to be inserted into the prosthetic cavity at least substantially to the bottom end thereof and comprises;
• a cutting element arranged to cut the prosthetic cement at one outer end of said cutting tool;
• and
• two guiding pins, which guiding pins are located on the cutting tool at a mutual distance apart;
• and
• wherein the guide member is substantially shaped as a stem of the prosthesis in the prosthetic cavity located in the prosthetic cement;
• and
• wherein the guide member is provided with two longitudinally running guiding grooves which each are arranged to engage one of said guiding pins of the cutting tool, wherein the guiding grooves are profiled such that the outer end of the cutting tool at which the cutting element is arranged to cut the prosthetic cement, when inserted into the prosthetic cavity and being moved to at least substantially to the bottom end thereof, is forced to follow a path corresponding to the profile of the line of intersection of the cement/bone interface.