Abstract: A method for providing a tool system for removing prosthetic cement from a bone of a patient undergoing a joint prosthesis replacement operation includes scanning the patient in the area of the joint prosthesis to obtain a profile of a line of intersection of a prosthetic cement/bone interface at its intersection with a longitudinally pre-selected plane; providing a guide member shaped as a stem of the prosthesis in a prosthetic cavity located in said prosthetic cement; and providing a cutting tool for forming a running cut through the prosthetic cement along the line of intersection. A stem of the cutting tool includes two protrusions along the length thereof. A guide member includes two grooves which each engage one of said protrusions. Grooves are profiled so the outer end of the stem is forced to follow a path corresponding to the profile of the line of intersection of the cement/bone interface.

Abstract: A method for providing a tool system for removing prosthetic cement from a bone of a patient undergoing a joint prosthesis replacement operation includes scanning the patient in the area of the joint prosthesis to obtain a profile of a line of intersection of a prosthetic cement/bone interface at its intersection with a longitudinally pre-selected plane; providing a guide member shaped as a stem of the prosthesis in a prosthetic cavity located in said prosthetic cement; and providing a cutting tool for forming a running cut through the prosthetic cement along the line of intersection. A stem of the cutting tool includes two protrusions along the length thereof. A guide member includes two grooves which each engage one of said protrusions. Grooves are profiled so the outer end of the stem is forced to follow a path corresponding to the profile of the line of intersection of the cement/bone interface.

Abstract: Acetabular implant and method for its manufacture, wherein the implant has a bone side with a contact surface to be fixed against the bone of the hip socket. A plastically deformable zone with an open porous structure connects to the contact surface, the zone being formed by a three-dimensional structure composed of strut elements with opposite ends, wherein these strut elements are connected at their ends in nodes. The zone is made of a material having an elongation at break of at least 15%.

Abstract: A method for providing a tool system for removing prosthetic cement from a bone of a patient undergoing a joint prosthesis replacement operation, comprising the steps of: scanning the patient in the area of the joint prosthesis so as to obtain at least one profile of a line of intersection of a prosthetic cement/bone interface at its intersection with a generally longitudinally pre-selected plane; providing a guide member substantially shaped as a stem of the prosthesis in a prosthetic cavity located in said prosthetic cement; providing a cutting tool for forming a running cut substantially completely through the prosthetic cement along the line of intersection; wherein a stem of the cutting tool comprises two laterally extending protrusions, which protrusions are located along the length of the stem at a mutual distance apart; and wherein the guide member is provided with two longitudinally running grooves which each engage one of said protrusions of the cutting tool, wherein the grooves are profiled such th

Abstract: A prosthesis device comprising a body at least partly formed from a biocompatible segmented thermoplastic elastomer having crystallized blocks, and at least one functional component which is able to reversibly bond to the crystallized blocks, wherein the elastomer has cartilage regenerative properties. A method is provided for the preparation of the biocompatible elastomer having cartilage regenerative properties, and a method for incorporating the biocompatible elastomer in a prosthesis device able to grow into cartilage.