Researchers in New Zealand found that artificial hip liners made of highly-cross-linked polyethylene showed less wear 10 years after implantation than liners made of conventional ultra-high-molecular-weight polyethylene.
Patients whose hip liners were made of highly cross-linked polyethylene also had a significantly lower prevalence of osteolysis and revision surgery, according to a report in Orthopedics Today.
That’s because cross-linking ties molecules together in a lattice-like matrix, Larry Wallace, senior staff scientist at Spectrum Plastics Group, told Medical Design & Outsourcing. The structure of regular high-density polyethylene is crystalline, Wallace told us.
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