A quasi-integrated implant, such as the Universal (PMMA) or the Medpor Quad ™ Motility Implant, is an alternative consideration to the porous spherical implants if pegging is not a consideration.

With these pieces in place, Liu and his colleagues tested several transparent skull implants on rats, finding that a thin window made from polymethyl methacrylate (PMMA)—which resembles ...

PMMA, polymethyl-methacrylate, is a thermoplastic acrylic linear polymer, the mer of which is illustrated in the diagram. PMMA is transparent, with a refractive index of 1.49, and easily formed into ...