So where does bone cement fit into this story? Since the 1940s, bone cement has been used, well, to cement bones back together (sorry it’s so obvious!). The bone cement I am discussing here is one of the most commonly used, a polymer called polymethylmethacrylate (PMMA). One of the first applications of PMMA was in cranioplasties (to repair cracks in skulls) in the 1940s.
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