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There is, nevertheless, a weakness: chemical oxidation degrades the plastic. While that's known, ‘Studies which have been done don't identify the mechanisms in situ,’ Samia said. ‘We will mimic the way the implants age in your body and test the way the microstructure of the polymer affects its wear properties while being simultaneously subjected to chemical stress.’ Here's how: Samia will certainly imbed iron oxide-based magnetic nanoparticles, which are biocompatible, in the polyethylene. Her preliminary research shows that too many nanoparticles weaken the properties of the implant plastic material.CQ HealthBeat: Apart from some new information regarding a Medicare experiment to build ‘medical homes,’ Berwick ‘made little information in his remarks, which mainly outline the provisions of medical care legislation and tout the activities that Medicare and Medicaid officials took to put into action it. This content was reprinted from kaiserhealthnews.org with permission from the Henry J. Kaiser Family members Foundation. Kaiser Health Information, an editorially independent news assistance, is an application of the Kaiser Family members Foundation, a nonpartisan healthcare policy research company unaffiliated with Kaiser Permanente. Related StoriesASTRO worried about proposed Medicare doctor payment cuts to radiation therapyYale experts discover improvements in mortality, hospitalizations and outcomes among Medicare patientsMembers signed up for Medicare Advantage content with their plans, study finds..