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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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Degeneration via XLIF Jody A. Rodgers , MD, FACS (Spine Midwest, Inc.); W.B. Rodgers , MD , and Edward J. Gerber 3 2011 30 3 A22 A22 2011 Introduction: The XLIF approach provides a minimally disruptive alternative to anterior column access that allows for large graft placement, disk height restoration, and indirect decompression, while avoiding posterior scar tissue from the previous procedure. Results of ASD treated with XLIF are presented. Methods: Of our single-site consecutive series of 932 XLIF patients, 276

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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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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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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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Mohamad Bydon, Risheng Xu, David Santiago-Dieppa, Mohamed Macki, Daniel M. Sciubba, Jean-Paul Wolinsky, Ali Bydon, Ziya L. Gokaslan and Timothy F. Witham

the lumbar spine, its role in affecting L5–S1 biomechanics remains unclear. 13 , 22 , 28 , 29 , 34 Thus, although some studies demonstrate increased adjacent-segment disease (ASD) after floating fusion, others have shown that including L5–S1 in the fusion construct appears to be protective against ASD development. 16 , 17 , 21 To better understand the natural history of degenerative spinal disease progression after instrumented fusion, we present a series of 511 patients who received posterior lumbar instrumented fusion for degenerative etiologies at a single

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Association of Neurological Surgeons. You may not sell, republish, or systematically distribute any published materials without written permission from JNSPG. 2015 Introduction The neurologic complication rate following complex adult spinal deformity surgery (ASD) has not been ascertained in any prospective, multicenter, observational study. Here, we compare preoperative lower extremity motor scores (LEMS) to 6 month postoperative scores. Methods 276 complex ASD patients from 15 sites worldwide were enrolled in this prospective, multicenter

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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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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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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