PloS one, 2016-11, Vol.11 (11), p.e0166452-e0166452
2016
Details
- Autor(en) / Beteiligte
- Titel
- Preserving Posterior Complex Can Prevent Adjacent Segment Disease following Posterior Lumbar Interbody Fusion Surgeries: A Finite Element Analysis
- Ist Teil von
- PloS one, 2016-11, Vol.11 (11), p.e0166452-e0166452
- Ort / Verlag
- United States: Public Library of Science
- Erscheinungsjahr
- 2016
- Link zum Volltext
- Quelle
- Free E-Journal (出版社公開部分のみ）
- Beschreibungen/Notizen
- To investigate the biomechanical effects of the lumbar posterior complex on the adjacent segments after posterior lumbar interbody fusion (PLIF) surgeries. A finite element model of the L1-S1 segment was modified to simulate PLIF with total laminectomy (PLIF-LAM) and PLIF with hemilaminectomy (PLIF-HEMI) procedures. The models were subjected to a 400N follower load with a 7.5-N.m moment of flexion, extension, torsion, and lateral bending. The range of motion (ROM), intradiscal pressure (IDP), and ligament force were compared. In Flexion, the ROM, IDP and ligament force of posterior longitudinal ligament, intertransverse ligament, and capsular ligament remarkably increased at the proximal adjacent segment in the PLIF-LAM model, and slightly increased in the PLIF-HEMI model. There was almost no difference for the ROM, IDP and ligament force at L5-S1 level between the two PLIF models although the ligament forces of ligamenta flava remarkably increased compared with the intact lumbar spine (INT) model. For the other loading conditions, these two models almost showed no difference in ROM, IDP and ligament force on the adjacent discs. Preserved posterior complex acts as the posterior tension band during PLIF surgery and results in less ROM, IDP and ligament forces on the proximal adjacent segment in flexion. Preserving the posterior complex during decompression can be effective on preventing adjacent segment degeneration (ASD) following PLIF surgeries.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 1932-6203eISSN: 1932-6203DOI: 10.1371/journal.pone.0166452Titel-ID: cdi_plos_journals_1842145666
- Format
- –
- Schlagworte
- Analysis, Biology and Life Sciences, Biomechanical engineering, Biomechanical Phenomena, Biomechanics, Computer simulation, Decompression, Degeneration, Education, Engineering, Finite Element Analysis, Finite element method, Hospitals, Humans, Laboratories, Laminectomy - methods, Ligaments, Longitudinal Ligaments, Lumbar Vertebrae - physiopathology, Lumbar Vertebrae - surgery, Mathematical analysis, Mathematical models, Medical equipment, Medicine and Health Sciences, Physical Sciences, Range of Motion, Articular, Spinal Fusion - adverse effects, Spine, Spine (lumbar), Stress concentration, Studies, Surgery, Systems design, Vertebra, Vertebrae