a method for producing a bioactive bone cement and a bone cement kit for anchoring artificial joints and for filling out bone defects . the method avoids polymerization - linked by - products and disadvantageous effects , while at the same time providing the bone cement with long - term stability . the inventive method uses a monomer - free polymethylmethacrylate , which is mixed with a suitable non - toxic solvent , and a bioactive , vitreous - crystalline material with a particle size ranging from & gt ; 20 to 200 μm , having 15 – 45 wt . % cao , 40 – 45 wt . % p 2 o 5 , 10 – 40 wt . % zro 2 and 0 . 7 – 3 . 5 wt . % fluoride , having apatite and calcium zircon phosphate as main crystal phases and a glass phase as an auxiliary component until a flowable mixture is obtained . the invention also relates to a bone cement kit having said components .