A method is provided for forming a plastic prosthesis bearing, net-shape
bearing, near net-shape bearing or plastic stock from which such a bearing
can be formed. The method includes the steps of providing plastic resin in
powdered form, subjecting the powdered resin to irradiation to cross-link
the resin, and molding the irradiated powder. The irradiated powder is
molded by applying heat and pressure to form the powder into a desired
solid plastic shape, the heating being sufficient to melt the powder.
