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Justin S. Smith, Manish Singh, Eric Klineberg, Christopher I. Shaffrey, Virginie Lafage, Frank J. Schwab, Themistocles Protopsaltis, David Ibrahimi, Justin K. Scheer, Gregory Mundis Jr., Munish C. Gupta, Richard Hostin, Vedat Deviren, Khaled Kebaish, Robert Hart, Douglas C. Burton, Shay Bess and Christopher P. Ames

, including that of Lafage et al. 18 Although the role of SVA has been established, more recently it has become clear that global alignment is not fully accounted for by SVA alone. 1 The role of the pelvis as a key regulator of spinal alignment and as a source of compensation has led to an expanded view of sagittal alignment. 10 , 18 , 20 , 21 The term “sagittal spinopelvic alignment” captures not only assessment of SVA but also key pelvic parameters, including pelvic incidence, pelvic tilt, and sacral slope ( Fig. 1 ). Pelvic incidence is a fixed parameter that

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examined include presence of interbody fusion, rod diameter, rod material, age and preop sagittal alignment. Methods: A retrospective review of a multicenter, prospective ASD database was conducted. Inclusion criteria: age=18yr, ASD, no revisions between >6wk and <2yrs postop. Spinal pelvic parameters, thoracic kyphosis (TK:T2-T12) and lumbar lordosis (LL:L1-S1) were measured overall and within and outside of the instrumented segments. Changes for SVA, PT, PI-LL, TK, and LL between 6wks-2yrs postop were calculated. Of these pts, the amount of thoracic loss and TL

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surveys than NONOP (p<0.05). OP and NONOP had similar coronal alignment (p<0.05). OP had worse sagittal spinopelvic alignment for all measures than NONOP except cervical lordosis, TK and pelvic incidence (PI). OP had greater percentage of pure sagittal classification (type S; OP=23%, NON=14%; p<0.05). OP had worse grades for all modifier categories: PT (26% vs 16%), PI-lumbar lordosis mismatch (37% vs 21%) and global sagittal alignment (29% vs 9%), OP vs NONOP, respectively (p<0.05). Conclusion: Prospective analysis of OP vs NONOP treated ASD patients demonstrated

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thoracolumbar spine describes a subset of fractures with posterior ligamentous complex disruption in response to a flexion and distraction moment imparted to the thoracolumbar spine. These injuries are mechanically and neurologically unstable and surgical stabilization is frequently necessary to prevent neurological deterioration and maintain sagittal alignment. Conventionally, open posterior fixation and fusion have been utilized as the standard surgical treatment. Recently, percutaneous techniques with pedicle screws insertion are becoming popular as they provide

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Background/Introduction: Transforaminal lumbar interbody fusion (TLIF) has become a popular surgical option to complement posterolateral fusion (PLF) for treatment of degenerative spinal conditions. Purported advantages of TLIF over PLF alone include enhanced fusion rates, improved sagittal alignment, and direct decompression of the neuroforamen. Earlier studies have examined these issues and yielded inconclusive results. Another often suggested advantage, that TLIF provides superior immediate stability and protects against early pedicle screw loosening, has never been

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30; p<0.001). Conclusions The addition of PPI seems to have a protective effect on the development of PJK. The analysis controlled for preoperative sagittal alignment as well as for correction of PI-LL. HYB was effective in restoring sagittal global alignment and cMIS in maintaining it. Neurosurg Focus Neurosurgical Focus FOC 1092-0684 American Association of Neurological Surgeons 2014.3.FOC-DSPNABSTRACTS Abstract Mayfield Clinical Science 243. Microendoscopic Decompression for Cervical Spondylotic Myelopathy

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greater Charlson comorbidity index (1.1 vs 0.85) than NONOP (n=446), respectively (p<0.05). OP had worse HRQOL scores on all surveys than NONOP (p<0.05). OP and NONOP had similar coronal alignment (p<0.05). OP had worse sagittal spinopelvic alignment for all measures than NONOP except cervical lordosis, TK and pelvic incidence (PI). OP had greater percentage of pure sagittal classification (type S; OP=23%, NON=14%; p<0.05). OP had worse grades for all modifier categories: PT (26% vs 16%), PI-lumbar lordosis mismatch (37% vs 21%) and global sagittal alignment (29% vs 9

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, Eric Massicotte , MD, MSc , and Michael Fehlings , MD, PhD (Toronto, Canada) 8 2015 123 2 History of Craniotomy, Cranioplasty, and Perioperative Care A493 A493 Copyright held by the American Association of Neurological Surgeons. You may not sell, republish, or systematically distribute any published materials without written permission from JNSPG. 2015 Introduction There is evidence that cervical sagittal alignment and spinal cord MRI hyperintensity correlate with disease severity in CSM patients. The impact of spinal

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kyphosis correction and in a maintenance of the sagittal alignment similar to a long-segment instrumentation allowing to save two or more segments of vertebral motion. J Neurosurg Journal of Neurosurgery JNS 0022-3085 1933-0693 American Association of Neurological Surgeons 10.3171/2017.4.JNS.AANS2017abstracts 2017.4.JNS.AANS2017ABSTRACTS Oral Presentations 645: Enhanced Preoperative Prediction of Discharge Disposition for Neurosurgical Patients Nikhil Sharma , Matthew Piazza , MD , Rebecca DeMoor