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Matthew D. Alvin, Jacob A. Miller, Daniel Lubelski, Benjamin P. Rosenbaum, Kalil G. Abdullah, Robert G. Whitmore, Edward C. Benzel and Thomas E. Mroz

Kingdom. TABLE 3: Cost analyses of lumbar spine surgery (1976–2014) * Authors & Year Study Design No. of Patients Follow-Up (mos) Indication Intervention Perspective CCM Discount Rate (%) DC ($) IC ($) LR Adogwa et al., 20123 RC 50 24 ASD revision fusion societal Medicare NR 30,216 20,979 2 Adogwa et al., 20122 RC 42 24 spinal stenosis revision fusion societal Medicare NR 32,965 19,927 2 Glassman et al., 2012 PC 80 60 DDD posterolateral

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adjacent segment disease (ASD) in the cervical spine. Methods: 888 patients received ACDFs for symptomatic degenerative disease of the cervical spine over the past 22 years at our institution. Of these, 108 patients received repeat ACDF surgeries due to symptomatic ASD. 77 received revision surgeries anteriorly, and 31 received posterior surgeries. Pre, intra, peri, and post-operative data were collected via clinical notes and patient interviews. Patients were followed up for an average of 111.8±76.5 months after the first ACDF. Results: In general, patients

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between the two forms of treatment emerge. Neurosurg Focus Neurosurgical Focus FOC 1092-0684 American Association of Neurological Surgeons 2015.3.FOC-DSPNABSTRACTS 103. A Prospective, Multi-Center Assessment of the Best Versus Worst Clinical Outcomes for Adult Spinal Deformity (ASD) Surgery Justin S. Smith , MD PhD , Christopher I. Shaffrey , MD FACS , Virginie Lafage , PhD , Frank Schwab , MD, PhD , Themistocles Protopsaltis , MD , Eric Klineberg , MD , Munish

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remains stable comparing 3 and 12-month results. Neurosurg Focus Neurosurgical Focus FOC 1092-0684 American Association of Neurological Surgeons 2014.3.FOC-DSPNABSTRACTS Abstract Outcomes Award 103. Two Year Prospective, Multicenter Analysis of Consecutive Adult Spinal Deformity (ASD) Patients Demonstrates Higher Fusion Grade, Lower Implant Failures and Greater Improvement in SRS-22r Scores for Patients Treated with Recombinant Human Bone Morpho Kai-Ming G. Fu , MD PhD , Eric Klineberg , MD , Shay

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Perioperative Care A8 A8 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 Revision surgery for adjacent segment disease (ASD) has been shown to improve quality of life (QOL) in a cost-effective manner. However, the QOL and financial implications of developing ASD have not been well described in the literature. Methods Individuals with ASD were matched to control patients without ASD that

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spinal deformity (ASD) remains a challenge for the spinal surgeon. While minimally invasive surgery (MIS) has many favorable attributes that would be of great benefit for the ASD population, improvements in lordosis and sagittal balance have remained elusive using MIS an approach. This report describes the evolution of an MIS method for treating ASD with attention to sagittal correction. Methods: Over an 18 month period 25 patients with thoracolumbar scoliosis were treated surgically. The mean patient age was 72 years, with 68% females. Patients were treated with

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Association of Neurological Surgeons 2013.4.FOC-LSRSABSTRACTS Oral Presentation Abstracts Paper 47. Age, Sagittal Deformity and Operative Correction are Risk Factors for Proximal Junctional Failure (PJF) Following Adult Spinal Deformity (ASD) Surgery Robert Hart , MD , Richard Hostin , MD , Themistocles Protopsaltis , MD , Shay Bess , MD , Frank Schwab , MD , Virginie Lafage , PhD; , Praveen Mummaneni , MD , Christopher Ames , MD , Christopher Shaffrey , MD , Justin

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systematically distribute any published materials without written permission from JNSPG. 2017 Background/Introduction: Adult spinal deformity (ASD) surgery is a massive undertaking that may involve a significant amount of blood loss, especially when various osteotomy techniques are utilized. Antifibrinolytic agents such as tranexamic acid (TXA) have been used in an attempt to reduce intraoperative blood loss. However, there is no universally accepted dosing protocol for TXA in spine surgery. Moreover, there are very few reports in the literature regarding high

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Background/Introduction: Pseudarthrosis after adult spinal deformity (ASD) surgery may result in instrumentation failure and need for revision. However, the correlation between fusion grade with or without rod fractures and HRQoL is not known. We assessed the association between HRQoL, fusion grade, and rod fracture with and without revision surgery. Materials/Methods: A prospective, multi-center ASD database with 2 year followup data was reviewed. Fusion grade was determined on plain films using published criteria; Grade III or IV at one or more segments was

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(PI-LL), and C7 SVA, in which disability occurs based on an ODI greater than 40. However, thresholds do not account for age and ODI has been shown to vary with age. The objective was to determine new thresholds based on age. Methods Multicenter, prospective study of consecutive ASD patients. Inclusion criteria: greater than 18yr, ASD. Patients were stratified into groups: less than 45yrs, 46–64, 65–74, greater than 75. Multivariate linear regressions were conducted for baseline PT, PI-LL, and SVA, with baseline ODI and age. ODI of 40 was used as the threshold