Biomechanics of sacropelvic fixation: a comprehensive finite element comparison of three techniques.
Luca Maria SconfienzaGloria CasaroliRuchi ChandeDerek LindseyTomaso VillaScott YerbyAli MesiwalaMatteo PanicoEnrico GallazziMarco Brayda-BrunoPublished in: European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society (2019)
Fixation with triangular implants did not result in stress increase on the lumbosacral instrumentation, likely due to the lack of connection with the posterior rods. IL and S2AI had a mild protective effect on S1 pedicle screws in terms of stresses and bone-implant loads. IL resulted in an increase in the rod stresses. A comparison between this study and previous work incorporating full osteointegration demonstrates how these results may be applied clinically to better understand the effects of different treatments on patient outcomes. These slides can be retrieved under Electronic Supplementary Material.