Die vorliegende Erfindung betrifft eine Form (1) zur Herstellung einer Femurkomponente eines Kniegelenkspacers, die zwei Teilformen (2,3) aufweist. Die erste Teilform (2) dient zur Ausformung der Tibiaseite der Femurkomponente und die zweite Teilform (3) zur Ausformung der Oberschenkelknochenseite der Femurkomponente.The mold (1) is provided with two part-molds (2,3), which are fully detached from each other, where the former part of the mold is used to form the tibial side of the femoral component and the latter part of the mold is used for shaping the femoral side of the femoral component. Both sub-molds are connected with each other by one or multiple releasable closure devices. The releasable closure device is a latching closure. The mold consists of a material that is plastic selected from the group of polypropylene, polyethylene and polyamide, glass reinforced polypropylene or polyamide.