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Nitin Agarwal, Federico Angriman, Ezequiel Goldschmidt, James Zhou, Adam S. Kanter, David O. Okonkwo, Peter G. Passias, Themistocles Protopsaltis, Virginie Lafage, Renaud Lafage, Frank Schwab, Shay Bess, Christopher Ames, Justin S. Smith, Christopher I. Shaffrey, Douglas Burton, D. Kojo Hamilton and the International Spine Study Group

. Data Collection and Radiographic Assessment The database contains de-identified information regarding the demographics, medical comorbidities, clinical examinations, and diagnostic study results of adult patients with spinal deformity. For the purpose of the present analysis, data for each patient were collected preoperatively and 1 year after surgery. The Oswestry Disability Index (ODI) and the Scoliosis Research Society–22 patient questionnaire (SRS-22) were used to measure HRQoL. 4 , 14 Full-length 36-inch cassette radiographs were obtained and analyzed at a

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Zachary J. Tempel, Gurpreet S. Gandhoke, Christopher M. Bonfield, David O. Okonkwo and Adam S. Kanter

patient-reported outcome measures including visual analog score (VAS) for back and leg pain and the Oswestry Disability Index (ODI) for varying conditions. 10 , 18 , 21 , 29 , 31–33 , 38 , 39 , 58 However, few single-center studies exist that evaluate the ability of the LLIF procedure in conjunction with PSIF to improve lumbar lordosis, correct coronal and sagittal plane deformity, and improve quality of life in patients with adult degenerative scoliosis. We report on the 1-year clinical and radiographic results in 26 patients with adult degenerative scoliosis who

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Lateral lumbar interbody fusion in the elderly: a 10-year experience

Presented at the 2018 AANS/CNS Joint Section on Disorders of the Spine and Peripheral Nerves

Nitin Agarwal, Andrew Faramand, Nima Alan, Zachary J. Tempel, D. Kojo Hamilton, David O. Okonkwo and Adam S. Kanter

pelvis were obtained to assess for radiographic endplate breach as well as occult injury to peritoneal or retroperitoneal structures. Electronic medical records were reviewed for patient demographics, procedures, clinical outcomes, and complications. Functional outcomes were reported using Oswestry Disability Index (ODI) scores preoperatively and at 6 weeks, 3 months, 6 months, and 1 year following surgery. Femoral neck t-scores were acquired from bone density scans. These were utilized to establish a correlation with graft subsidence. Statistical analysis was

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Fred C. Lam, Adam S. Kanter, David O. Okonkwo, James W. Ogilvie and Praveen V. Mummaneni

secondary adult curves due to metabolic bone disease (Type 3b). The Aebi system stands out from other contemporary classifications by addressing the different etiological factors of spinal deformity, but it does not quantify deformity to aid meaningfully in surgical planning. The Schwab Classification System The Schwab classification system was published in 2006 following a prospective multicenter series of 947 adult patients with spinal deformity. 102 This system combines radiographic with health status measures (the Oswestry Disability Index and the SRS

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Khoi D. Than, Praveen V. Mummaneni, Kelly J. Bridges, Stacie Tran, Paul Park, Dean Chou, Frank La Marca, Juan S. Uribe, Todd D. Vogel, Pierce D. Nunley, Robert K. Eastlack, Neel Anand, David O. Okonkwo, Adam S. Kanter and Gregory M. Mundis Jr.

groups). A flow diagram for patient selection is shown in Fig. 1 . Fig. 1. Flow diagram for patient selection. Data Collection Health-related quality of life measures were assessed at baseline and at the latest follow-up visit. Clinical outcome variables included Oswestry Disability Index (ODI) 8 and visual analog scale (VAS) scores for both back and leg symptoms. Demographic and intraoperative data, including age, body mass index (BMI), estimated blood loss (EBL), operating room time, and number of levels treated, were also analyzed for each outcome group. Thirty

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Michael Y. Wang, Stacie Tran, G. Damian Brusko, Robert Eastlack, Paul Park, Pierce D. Nunley, Adam S. Kanter, Juan S. Uribe, Neel Anand, David O. Okonkwo, Khoi D. Than, Christopher I. Shaffrey, Virginie Lafage, Gregory M. Mundis Jr., Praveen V. Mummaneni and the MIS-ISSG Group

selected to participate in the MIS-ISSG ( Fig. 1 ). All centers obtained local institutional review board approval for participation in this study. Data were collected retrospectively through an annual review process, and data were housed centrally with centralized image processing and analysis. All patients had the following data at baseline (preoperative) and the last follow-up: 36-inch anteroposterior and lateral standing scoliosis radiographs, Oswestry Disability Index (ODI) scores, and separate numeric rating scale (NRS) scores for leg and back pain. The NRS

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Paul Park, Kai-Ming Fu, Robert K. Eastlack, Stacie Tran, Gregory M. Mundis Jr., Juan S. Uribe, Michael Y. Wang, Khoi D. Than, David O. Okonkwo, Adam S. Kanter, Pierce D. Nunley, Neel Anand, Richard G. Fessler, Dean Chou, Mark E. Oppenlander, Praveen V. Mummaneni and the International Spine Study Group

(PI-LL mismatch ± 10° and SVA < 5 cm), patients were divided into an aligned (AL) or a malaligned (MAL) group ( Fig. 1 ). FIG. 1. Example of a patient with malalignment of the spine. A: Preoperative lateral radiograph of a patient with scoliosis showing significantly elevated spinopelvic parameters. B: Two-year postoperative lateral radiograph showing improved but still suboptimal spinopelvic parameters. The primary clinical outcome assessed was the Oswestry Disability Index (ODI) score. Secondarily, back and leg pain were assessed by the visual analog scale

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Alexander A. Theologis, Gregory M. Mundis Jr., Stacie Nguyen, David O. Okonkwo, Praveen V. Mummaneni, Justin S. Smith, Christopher I. Shaffrey, Richard Fessler, Shay Bess, Frank Schwab, Bassel G. Diebo, Douglas Burton, Robert Hart, Vedat Deviren and Christopher Ames

performed using Spineview (ENSAM Laboratory of Biomechanics) at a central location and included global C7–S1 SVA, lumbar lordosis (LL), pelvic incidence (PI), PT, mismatch between PI and LL (PI-LL), and lumbar/thoracolumbar Cobb angle. Clinical outcome measures included the Oswestry Disability Index (ODI) 13 and pre- and postoperative back and leg pain as assessed with a 10-point visual analog scale (VAS). Statistical Analysis Frequency distributions and summary statistics were tabulated for all baseline and outcome variables. Mean values are given with standard

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Khoi D. Than, Paul Park, Kai-Ming Fu, Stacie Nguyen, Michael Y. Wang, Dean Chou, Pierce D. Nunley, Neel Anand, Richard G. Fessler, Christopher I. Shaffrey, Shay Bess, Behrooz A. Akbarnia, Vedat Deviren, Juan S. Uribe, Frank La Marca, Adam S. Kanter, David O. Okonkwo, Gregory M. Mundis Jr., Praveen V. Mummaneni and the International Spine Study Group

Collection Outcomes were assessed based on 2-year postoperative clinical outcome variables, including visual analog scale (VAS) scores for both back and leg and the Oswestry Disability Index (ODI). Demographic and intraoperative data were also recorded for each outcome group, including age, body mass index (BMI), estimated blood loss (EBL), operating room (OR) time, and number of levels treated. All patients had 36-inch standing scoliosis radiographs at baseline and at least 2-years' follow-up. Measured radiographic parameters included coronal curve, pelvic incidence (PI

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Paul Park, Kai-Ming Fu, Praveen V. Mummaneni, Juan S. Uribe, Michael Y. Wang, Stacie Tran, Adam S. Kanter, Pierce D. Nunley, David O. Okonkwo, Christopher I. Shaffrey, Gregory M. Mundis Jr., Dean Chou, Robert Eastlack, Neel Anand, Khoi D. Than, Joseph M. Zavatsky, Richard G. Fessler and the International Spine Study Group

, pelvic incidence (PI), lumbar lordosis (LL), and PI-LL were measured. All radiographs were sent to a central site where the measurements were obtained using Surgimap software (Nemaris, Inc.). Clinical Outcome Assessment Outcomes were measured preoperatively and at the 2-year follow-up using the visual analog scale (VAS) for back and leg pain and the Oswestry Disability Index (ODI) to assess functional disability. Statistical Analysis AL and MAL subgroup comparisons were done within each age group using the Mann-Whitney U-test. Categorical variables were compared using