Journal of spinal disorders & techniques
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J Spinal Disord Tech · Apr 2008
Radiation exposure to the surgeon and the patient during kyphoplasty.
Prospective study of patients who underwent single or multilevel kyphoplasty for vertebral fractures. ⋯ Without eye or hand protection, the total radiation exposure dose to these areas would exceed the occupational exposure limit after 300 cases per year. Surgeons should wear lead lined glasses and keep their hands out of the radiation beam.
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J Spinal Disord Tech · Apr 2008
Increasing bending strength and pullout strength in conical pedicle screws: biomechanical tests and finite element analyses.
Comparative in vitro biomechanical study and finite element analysis. ⋯ Conical screws effectively increased the bending strength and pullout strength simultaneously. The finite element analyses reliably predicted the results of the mechanical tests.
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J Spinal Disord Tech · Apr 2008
Comparative StudyBiomechanical comparison of anterior lumbar interbody fusion and transforaminal lumbar interbody fusion.
An in vitro biomechanical comparison of 2 fusion techniques, anterior lumbar interbody fusion (ALIF) and transforaminal lumbar interbody fusion (TLIF), on cadaveric human spines. ⋯ Both ALIF and TLIF procedures combined with posterior instrumentation significantly improved construct stability of intact spinal motion segments. However, there was no statistical difference between these 2 fusion techniques. The 2 ALIF approaches (lateral and anterior) also had similar construct stability even though anterior longitudinal ligament severing significantly reduced stability.
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J Spinal Disord Tech · Apr 2008
Higher risk of adjacent segment degeneration after floating fusions: long-term outcome after low lumbar spine fusions.
We report the long-term outcome after mono-segmental and bisegmental fusions at the lumbar L4-S1 region of the spine. ⋯ We conclude that floating fusions of single low lumbar segments are more likely to result in ASD and are negatively influenced by sagittal plane abnormalities.
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J Spinal Disord Tech · Apr 2008
Prevalence of lumbar total disc replacement candidates in a community-based spinal surgery practice.
This study was a retrospective record review of consecutive lumbar surgical patients seen by one surgeon in a private, community setting over a 15-month period. ⋯ This study suggests that in a community-based spinal surgery practice setting, only 14% of fusion patients, and only 5% of all lumbar surgery patients, would be TDR candidates. Furthermore, of those potential TDR candidates, as many as 66% might be expected to have their underlying condition related to a claim of a compensable work-related injury.