Influence of 2 different dynamic stabilization systems on sagittal spinopelvic alignment

Journal of Spinal Disorders & Techniques
Hong ChenJean-Paul Steib

Abstract

A retrospective study. To analyze and compare the sagittal spinopelvic alignment variation after implantation of purely dynamic and hybrid pedicle screw-based stabilization systems, seeking for its clinical implication. Numerous studies have investigated the kinematic features of pedicle screw-based dynamic stabilization systems since their clinical application. However, there is a lack of literature concerning their influence on the sagittal spinopelvic alignment, which has been proved to be important in the development of future adjacent segment degeneration (ASD). Lateral standing lumbar radiographs of 29 patients (17 males, 12 females, 27 to 64 y) who were implanted with purely dynamic (Dynesys: group A, n=15) or hybrid (FlexPLUS: group B, n=14) stabilization systems, and with a minimum follow-up of 1 year, have been reviewed. These parameters were measured using Spineview software and were compared within and between groups: L1 to S1 lordosis, lordosis of instrumented segments (ISL), cranial adjacent segment lordosis (CASL) next to the instrumentation, highest instrumented segment lordosis (HISL), pelvic incidence, sacral slope, and pelvic tilt. Preoperative lordosis parameters were not significantly different between grou...Continue Reading

Citations

Jan 3, 2014·Journal of Biomedical Materials Research. Part a·Uphar ChamoliNaomi Tsafnat
Oct 7, 2015·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·Matteo FormicaCarlo Formica
May 31, 2017·Orthopaedics & Traumatology, Surgery & Research : OTSR·L V P C LimaW Skalli
Jun 21, 2018·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Murat UlutaşTeyfik Demir

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