Spacer polymethyl methacrylate bone cement

摘要

Use of calcium sulfate dihydrate and calcium sulfate hemihydrate and their mixtures in the manufacture of X-ray opaques is new. The calcium sulfate dihydrate and calcium sulfate hemihydrate are present in a hydrolytic degradable form having a Mohs hardness of 3 or less and a solubility in water at room temperature of less than 4 g per liter. Preferred Features: The X-ray opaques additionally contain calcium carbonate and/or magnesium carbonate. The calcium sulfate dihydrate and calcium sulfate hemihydrate are present in micro-porous form. The X-ray opaques contain pharmaceutical auxiliary aids.