Abstract: A device for determining the required distance between a head region and a shaft region of a joint spacer, to a system, to a method for producing a joint spacer, and to a use. A device for determining the required distance between a head region and a shaft region of a joint spacer includes a head and a shaft, which can be positioned at different distances from one another, wherein the device further includes a fixing apparatus for fixing a distance between the head and the shaft. The device allows the required shape of a hip joint spacer to be determined intraoperatively by adjusting the distance of the head from the shaft to the specific anatomy of the patient.

Abstract: The invention relates to a casting mold for producing a hip joint spacer, which comprises a head element comprising an upper shell and a lower shell, optionally a neck element, and a stem element, which comprises an upper shell and a lower shell, wherein the casting mold has a latching element, and an upper shell and a lower shell of the head element and/or of the stem element can be connected to one another by means of the latching element.

Abstract: The invention relates to a casting mold for producing a hip joint spacer, which comprises a head element comprising an upper shell and a lower shell, optionally a neck element, and a stem element, which comprises an upper shell and a lower shell, wherein the casting mold has a latching element, and an upper shell and a lower shell of the head element and/or of the stem element can be connected to one another by means of the latching element.