Method for manufacturing a powder component for cement for medical use, use of such powder component and such powder component

Method for manufacturing a powder component for a cement for medical use,

• said cement including a liquid component containing a polymerizable substance and a powder component containing a plastic substance selected from the group consisting of acrylic polymer particles, polymethylmethacrylate and copolymers containing polymethylmethacrylate, and an X-ray contrast medium, and
• wherein the liquid component and the powder component are adapted to be mixed for providing a setting mass which is set to form the cement, said method comprising the steps of:
• mixing a water soluble, non-ionic X-ray contrast medium with the plastic substance selected from the group consisting of acrylic polymer particles, polymethylmethacrylate and copolymers containing polymethylmethacrylate, whereby particles of said X-ray contrast medium released from the cement after cementation are dissolved and do not thereby contribute to the wear of articulating or bearing surfaces adjacent the point of cementation,
• sterilizing by radiating the powder component containing said X-ray contrast medium in an inert gas atmosphere for maintaining the strength of the powder component after the sterilization.

Method for manufacturing a powder component for a cement for medical use,

• said cement including a liquid component containing a polymerizable substance and a powder component containing a plastic substance selected from the group consisting of acrylic polymer particles, polymethylmethacrylate and copolymers containing polymethylmethacrylate, and an X-ray contrast medium, and
• wherein the liquid component and the powder component are adapted to be mixed for providing a setting mass which is set to form the cement, said method comprising the steps of:
• mixing a water soluble, non-ionic X-ray contrast medium with the plastic substance selected from the group consisting of acrylic polymer particles, polymethylmethacrylate and copolymers containing polymethylmethacrylate, whereby particles of said X-ray contrast medium released from the cement after cementation are dissolved and do not thereby contribute to the wear of articulating or bearing surfaces adjacent the point of cementation,
• sterilizing by radiating the powder component containing said X-ray contrast medium at a negative pressure and in an inert gas atmosphere for maintaining the strength of the powder component after the sterilization.