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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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the total 511 patients, 502 (98.24%) presented with back pain, 376 (74.17%) with radiculopathy, 76 (14.87%) with motor weakness, and 32 (6.26%) with pre-operative bowel/bladder dysfunction. An average of 2.04 1.03 spinal levels were fused. Post-operatively, patients experienced a significant improvement in back pain (p<0.0001) and radiculopathy (p<0.0001). Patients with fusions excluding the sacrum (floating fusions) were statistically more likely to develop ASD compared with those with fusion constructs ending at S1 distally (p=0.030), but less likely to develop

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Oral Presentations

2010 AANS Annual Meeting Philadelphia, Pennsylvania May 1–5, 2010

database to identify patients who had undergone noncontiguous anterior cervical fusion. Baseline characteristics and postoperative variables were evaluated. Primary outcome was the presence of symptomatic degeneration at the intermediate segment. Results: Of 2107 total cases, we identified 22 cases of noncontiguous anterior cervical fusion. No patient was found to have symptomatic ASD at the intervening level during the follow-up period. Postoperatively, of 17 patients, neurological improvement was seen in 13 and no change in 4. Overall symptomatic outcome as

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, MD, PhD 3 2017 42 3 Peripheral Nerve A10 A11 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. 2017 Introduction: The purpose of this study is to evaluate the efficacy and safety of cervical total disc replacement (TDR) for symptomatic adjacent segment degeneration (ASD) with previous anterior cervical discectomy and fusion (ACDF) was done, compared to ACDF in the treatment of cervical ASD

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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

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ABSTRACTS Abstracts 619. Development of a Preoperative Predictive Model for Intra- or Peri-operative Major Complications with High Accuracy Validated with 558 ASD Patients Christopher Pearson Ames , MD, FAANS , Justin Scheer , BS , Justin Smith , MD, PhD , Frank Schwab , MD , Virginie Lafage , PhD , Christopher Shaffrey , MD , Robert Bess , MD , Tamir Ailon , MD, MPH , Douglas Burton , MD , Eric Klineberg , MD , and International Spine Study Group , (San