Abstract A reticular reinforcement (4), which surrounds the shaft (1) of a femoral head prosthesis (2) at a distance, separates a bed (5) of bone cement in its inside from a layer of compacted spongy tissue (6) on the outside. It is divided up into individual flaps (7), which are secured distally on a journal (8). …<??>The slots which are present between the flaps (7) and which extend over the entire height permit a substantial widening of the reticular reinforcement (4) in the radial direction and thus permit an adaptation to the individual cavity being operated on and to anchorage shafts (1) with cross-sections of different sizes and different shapes. …<IMAGE>…