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Eduardo Martinez-del-Campo, Jay D. Turner, Hector Soriano-Baron, Anna G. U. S. Newcomb, Samuel Kalb and Nicholas Theodore

.01) of 1.8 ± 2.9 mm. None of the 5 patients with a lordotic increase in CSA of more than 2 mm ( Table 1 ) experienced any clinical or neurological deficits. The mean sagittal alignment using C2–7 SVA was 13.8 ± 8 mm (range −1.4 to 26.6 mm) postoperatively and 16.2 ± 9.0 mm (range −3.5 to 30.2 mm) at last follow-up. The mean sagittal alignment using C1–7 SVA was 25.1 ± 9.8 mm (range 9.8–39.9 mm) postoperatively and 27.8 ± 10.2 mm (range 8.3–43.3 mm) at last follow-up. The differences between follow-up and postoperative measurements for both SVA calculations were not

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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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-0684 American Association of Neurological Surgeons 10.3171/2017.3.FOC-DSPNabstracts 2017.3.FOC-DSPNABSTRACTS Charles Kuntz Scholar Award Presentations (Abstracts 104–123) 119. Laminoplasty vs. Laminectomy-Fusion for the Treatment of Cervical Myelopathy: Preliminary Results from the CSM-Study Comparing Cervical Sagittal Alignment and Clinical Outcomes Vijay Ravindra , MD, MSPH , Jill Curran , MS , Praveen V. Mummaneni , MD , Adam S. Kanter , MD , Erica Fay Bisson , MD, MPH , Robert F. Heary , MD

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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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, 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

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sagittal alignment as well as for correction of PI-LL. HYB was effective in restoring sagittal global alignment and cMIS in maintaining it. J Neurosurg Journal of Neurosurgery JNS 0022-3085 1933-0693 American Association of Neurological Surgeons 2015.6.JNS.AANS2014ABSTRACTS Philip L. Gildenberg Resident Award 630. Striatal Stimulation for Enhancement of Recovery in a Rodent Traumatic Brain Injury Model Joshua Paul Aronson , MD , Husam Katnani , PhD , Jimmy Yang , BA , Matthew Thombs , BA