Abstract: A system for ensuring correct insertion and spatial orientation of a prosthesis cup and/or a prosthesis neck of an artificial hip joint is described. The system comprises a tool (30) for controlling the mutual positioning of the main components in a femoral prosthesis; a measuring device (40) for measuring the distance between two supports (2, 2?) connected to the patient s pelvis and femur; and a positioning tool (1) designed to be releasably connected to a handle part (14) connected to the tool according to item a) and to the two supports connected to the patients pelvis and femur. A measuring device and a positioning tool included in the system is also described in addition to a method for surgery by means of the present tools.

Abstract: A system and a method for ensuring correct insertion of the components of a femoral prosthesis, i.e. a prosthesis stem with a ball head and a cup with recess for receipt of the ball head, is described. The system comprises a tool for controlling the mutual angle between the prosthesis stem and the cup in addition to a positioning system for definition of a reference system and for determination and adjustment of the offset and length of the leg.

Abstract: A system and a method for ensuring correct insertion of the components of a femoral prosthesis, i.e. a prosthesis stem with a ball head and a cup with recess for receipt of the ball head, is described. The system comprises a tool for controlling the mutual angle between the prosthesis stem and the cup in addition to a positioning system for definition of a reference system and for determination and adjustment of the offset and length of the leg.