A 41 year-old male that presented after a fall downstairs and the initial imaging was misinterpreted, missing a subtle abnormality, C5/6 subluxation. The patient presented later with neck pain and further imaging demonstrated bilateral facet dislocation with severe deformity requiring 360 spinal fixation.
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| http://dx.doi.org/10.1016/j.radcr.2021.07.036 | DOI Listing |
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Department of Neurosurgery, Marcus Neuroscience Institute, Boca Raton Regional Hospital, Boca Raton, FL, United States.
Article Synopsis
- The study investigates the biomechanical effects of different internal fixation techniques for high-grade L5-S1 spondylolisthesis, focusing on how stiffness and hardware stress impact outcomes.
- A finite element model of the lumbar spine was created to simulate high-grade spondylolisthesis and assess three treatment methods: anterior plate system (APS), bilateral pedicle screw system (BPSS), and transdiscal screw system (TSS).
- Results showed that while all treatments reduced range of motion, TSS had the best resistance to shear forces and lower internal fixation stress, although it increased stress on the adjacent annulus compared to APS and BPSS.
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