Development of a low-cost polymethylmethacrylate stand-alone cervical cage: technical note.

摘要: Background and Study Aims Stand-alone cervical cages aim to provide primary stability, yield solid fusion in the long-term course, maintain physiologic alignment. However, many implants designed for these purposes fail achieving goals. Following implantation, relatively high rates of cage subsidence failure disc height maintenance may lead kyphosis poor alignment spine. At same time, costs implantation are compared with their unfavorable radiologic performance. Thus study was develop test mechanically a low-cost polymethylmethacrylate (PMMA) similar mechanical procedural properties commercial polyetheretherketone (PEEK) cage. Material Methods Following determination design, casting mold developed production PMMA cages. Nine were produced nine PEEK using static compression tests 0 45 degrees according recommendations American Society Testing Materials. Mean compressive strength, mean displacement, tensile stiffness determined. Results At axial compression, strength significantly higher (p  Conclusions The newly seems show superior Considering preparation time only 10 minutes low price material, cost-benefit ratio clearly points use clinical effectiveness has be proven separate study.