Medical implant or medical implant part comprising porous ultrahigh molecular weight polyethylene and process for producing the same

摘要

A medical implant or medical implant part comprising porous ultrahigh molecular weight polyethylene and process for producing the same are described. The ultrahigh molecular weight polyethylene has a weight average molecular weight of about 400,000 atomic mass units or more, (ii) the ultrahigh molecular weight polyethylene has a porosity of about 20% or more, (iii) the average diameter of the pores in the ultrahigh molecular weight polyethylene is about 400 mu m or less, and (iv) at least some of the ultrahigh molecular weight polyethylene comprises hydrophilic functional groups attached thereto.