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202. Recovery Kinetics of Radiographic and Implant-Related Revision Patients Following Adult Spinal Deformity Surgery

Author

Passias, Peter G., primary, Jalai, Cyrus M., additional, Lafage, Virginie, additional, Scheer, Justin K., additional, Hamilton, D. Kojo, additional, Line, Breton, additional, Bess, Shay, additional, Schwab, Frank J., additional, Ames, Christopher P., additional, Burton, Douglas C., additional, Hart, Robert A., additional, and Klineberg, Eric O., additional

Published
2016
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203. Validity, Reliability, and Responsiveness of SRS-7 as an Outcomes Assessment Instrument for Operatively Treated Patients With Adult Spinal Deformity

Author

Jain, Amit, primary, Lafage, Virginie, additional, Kelly, Michael P., additional, Hassanzadeh, Hamid, additional, Neuman, Brian J., additional, Sciubba, Daniel M., additional, Bess, Shay, additional, Shaffrey, Christopher I., additional, Ames, Christopher P., additional, Scheer, Justin K., additional, Burton, Douglas, additional, Gupta, Munish C., additional, Hart, Robert, additional, Hostin, Richard A., additional, and Kebaish, Khaled M., additional

Published
2016
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204. Predictive Model for Cervical Alignment and Malalignment Following Surgical Correction of Adult Spinal Deformity

Author

Passias, Peter G., primary, Oh, Cheongeun, additional, Jalai, Cyrus M., additional, Worley, Nancy, additional, Lafage, Renaud, additional, Scheer, Justin K., additional, Klineberg, Eric O., additional, Hart, Robert A., additional, Kim, Han Jo, additional, Smith, Justin S., additional, Lafage, Virginie, additional, and Ames, Christopher P., additional

Published
2016
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205. Prospective Multicenter Assessment of Early Complication Rates Associated With Adult Cervical Deformity Surgery in 78 Patients

Author

Smith, Justin S., primary, Ramchandran, Subaraman, additional, Lafage, Virginie, additional, Shaffrey, Christopher I., additional, Ailon, Tamir, additional, Klineberg, Eric, additional, Protopsaltis, Themistocles, additional, Schwab, Frank J., additional, O'Brien, Michael, additional, Hostin, Richard, additional, Gupta, Munish, additional, Mundis, Gregory, additional, Hart, Robert, additional, Kim, Han Jo, additional, Passias, Peter G., additional, Scheer, Justin K., additional, Deviren, Vedat, additional, Burton, Douglas C., additional, Eastlack, Robert, additional, Bess, Shay, additional, Albert, Todd J., additional, Riew, K. Daniel, additional, and Ames, Christopher P., additional

Published
2016
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206. Economic Impact of Revision Surgery for Proximal Junctional Failure After Adult Spinal Deformity Surgery

Author

Theologis, Alexander A., primary, Miller, Liane, additional, Callahan, Matt, additional, Lau, Darryl, additional, Zygourakis, Corinna, additional, Scheer, Justin K., additional, Burch, Shane, additional, Pekmezci, Murat, additional, Chou, Dean, additional, Tay, Bobby, additional, Mummaneni, Praveen, additional, Berven, Sigurd, additional, Deviren, Vedat, additional, and Ames, Christopher P., additional

Published
2016
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208. 166 Predictive Modeling of Length of Hospital Stay Following Adult Spinal Deformity Correction

Author

Scheer, Justin K., primary, Ailon, Tamir T., additional, Smith, Justin S., additional, Hart, Robert, additional, Burton, Douglas C., additional, Bess, Shay, additional, Neuman, Brian J., additional, Passias, Peter G., additional, Miller, Emily, additional, Shaffrey, Christopher I., additional, Schwab, Frank, additional, Lafage, Virginie, additional, Klineberg, Eric, additional, and Ames, Christopher P., additional

Published
2016
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209. Prospective multicenter assessment of perioperative and minimum 2-year postoperative complication rates associated with adult spinal deformity surgery

Author

Smith, Justin S., primary, Klineberg, Eric, additional, Lafage, Virginie, additional, Shaffrey, Christopher I., additional, Schwab, Frank, additional, Lafage, Renaud, additional, Hostin, Richard, additional, Mundis, Gregory M., additional, Errico, Thomas J., additional, Kim, Han Jo, additional, Protopsaltis, Themistocles S., additional, Hamilton, D. Kojo, additional, Scheer, Justin K., additional, Soroceanu, Alex, additional, Kelly, Michael P., additional, Line, Breton, additional, Gupta, Munish, additional, Deviren, Vedat, additional, Hart, Robert, additional, Burton, Douglas C., additional, Bess, Shay, additional, Ames, Christopher P., additional, and _, _, additional

Published
2016
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210. Outcomes of Operative and Nonoperative Treatment for Adult Spinal Deformity

Author

Smith, Justin S., primary, Lafage, Virginie, additional, Shaffrey, Christopher I., additional, Schwab, Frank, additional, Lafage, Renaud, additional, Hostin, Richard, additional, O'Brien, Michael, additional, Boachie-Adjei, Oheneba, additional, Akbarnia, Behrooz A., additional, Mundis, Gregory M., additional, Errico, Thomas, additional, Kim, Han Jo, additional, Protopsaltis, Themistocles S., additional, Hamilton, D. Kojo, additional, Scheer, Justin K., additional, Sciubba, Daniel, additional, Ailon, Tamir, additional, Fu, Kai-Ming G., additional, Kelly, Michael P., additional, Zebala, Lukas, additional, Line, Breton, additional, Klineberg, Eric, additional, Gupta, Munish, additional, Deviren, Vedat, additional, Hart, Robert, additional, Burton, Doug, additional, Bess, Shay, additional, and Ames, Christopher P., additional

Published
2016
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211. Assessment of Impact of Long-Cassette Standing X-Rays on Surgical Planning for Cervical Pathology

Author

Ramchandran, Subaraman, primary, Smith, Justin S., additional, Ailon, Tamir, additional, Klineberg, Eric, additional, Shaffrey, Christopher, additional, Lafage, Virginie, additional, Schwab, Frank, additional, Bess, Shay, additional, Daniels, Alan, additional, Scheer, Justin K., additional, Protopsaltis, Themi S., additional, Arnold, Paul, additional, Haid, Regis W., additional, Chapman, Jens, additional, Fehlings, Michael G., additional, and Ames, Christopher P., additional

Published
2016
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212. External validation of the adult spinal deformity (ASD) frailty index (ASD-FI).

Author

The European Spine Study Group, The International Spine Study Group, European Spine Study Group, International Spine Study Group, Miller, Emily K., Sánchez Pérez-Grueso, Francisco Javier, Carreon, Leah Y., Schwab, Frank J., Lafage, Virginie, Bess, Shay, Scheer, Justin K., Ames, Christopher P., Vila-Casademunt, Alba, Pellisé, Ferran, Neuman, Brian J., Kebaish, Khaled M., Sciubba, Daniel M., Smith, Justin S., Shaffrey, Christopher I., and Alanay, Ahmet

Subjects
SPINE abnormalities, SPINE physiology, BLOOD loss estimation, PREOPERATIVE care, SPINAL surgery
Abstract

Purpose: To assess the ability of the recently developed adult spinal deformity frailty index (ASD-FI) to predict odds of perioperative complications, odds of reoperation, and length of hospital stay after adult spinal deformity (ASD) surgery using a database other than the one used to create the index.Methods: We used the ASD-FI to calculate frailty scores for 266 ASD patients who had minimum postoperative follow-up of 2 years in the European Spine Study Group (ESSG) database. Patients were enrolled from 2012 through 2013. Using ASD-FI scores, we categorized patients as not frail (NF) (< 0.3 points), frail (0.3-0.5 points), or severely frail (SF) (> 0.5 points). Multivariable logistic regression, adjusted for preoperative and surgical factors such as operative time and blood loss, was performed to determine the relationship between ASD-FI category and odds of major complications, odds of reoperation, and length of hospital stay.Results: We categorized 135 patients (51%) as NF, 90 patients (34%) as frail, and 41 patients (15%) as SF. Overall mean ASD-FI score was 0.29 (range 0-0.8). The adjusted odds of experiencing a major intraoperative or postoperative complication (OR 4.5, 95% CI 2.0-10) or having a reoperation (OR 3.9, 95% CI 1.7-8.9) were higher for SF patients compared with NF patients. Mean hospital stay was 2.1 times longer (95% CI 1.8-2.4) for SF patients compared with NF patients.Conclusions: Greater patient frailty, as measured by the ASD-FI, is associated with longer hospital stays and greater odds of major complications and reoperation. These slides can be retrieved under Electronic Supplementary Material. [ABSTRACT FROM AUTHOR]

Published
2018
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214. Under Correction of Sagittal Deformities Based on Age-adjusted Alignment Thresholds Leads to Worse Health-related Quality of Life Whereas Over Correction Provides No Additional Benefit.

Author

Scheer, Justin K., Lafage, Renaud, Schwab, Frank J., Liabaud, Barthelemy, Smith, Justin S., Mundis, Gregory M., Hostin, Richard, Shaffrey, Christopher I., Burton, Douglas C., Hart, Robert A., Han J. Kim, Bess, Shay, Gupta, Munish, Lafage, Virginie, Ames, Christopher P., Kim, Han J, and International Spine Study Group

Subjects
*SCOLIOSIS, *SPINE abnormalities, *KYPHOSIS, *LORDOSIS, *DIAGNOSIS, *QUALITY of life, *SPINE radiography, *PELVIC physiology, *AGE distribution, *HEALTH surveys, *LONGITUDINAL method, *SPINE diseases, *HEALTH outcome assessment, *POSTOPERATIVE period, *QUESTIONNAIRES, *OPERATIVE surgery, *RETROSPECTIVE studies, *DISEASE risk factors
Abstract

Study Design: Retrospective review of prospectively-collected database.Objective: This study aims to compare 2-year clinical outcomes of patients who underwent surgical reconstructions based on their achievement to age-adjusted alignment ideals.Summary Of Background Data: Recent research in sagittal plane has proposed age-adjusted alignment thresholds. However, the impact of these thresholds on postoperative health-related quality of life (HRQOL) is yet to be investigated.Methods: Patients were included if they were more than 18-years old and underwent surgical correction of adult spinal deformity with a complete 2-year follow-up. Patients were stratified into three groups based on achievement of age-adjusted thresholds in pelvic tilt (PT), pelvic incidence minus lumbar lordosis (PI-LL), and sagittal vertical axis (SVA). First group included patients who reached the exact age-adjusted threshold ± 10 years (MATCHED), other two groups included patients who were over corrected (OVER), and under corrected (UNDER). Clinical outcomes including actual value and offset from age-adjusted Oswestry Disability Index, Short-Form-36 (SF-36) -physical component summary, and Scoliosis Research Society-22r (SRS-22r) were compared between groups at 2 years follow-up.Results: A total of 343 patients (mean, 57 yrs and 83% females) were included. Sagittal profile of the population was: PT = 23.6°, SVA = 65.8 mm, and PI-LL = 15.6°. At 2-year follow-up, there was significant improvement in all sagittal modifiers with 25.7%, 24.3%, and 33.1% of the patients matching their age alignment targets in terms of PT, PI-LL, and SVA, respectively. For PT and PI-LL, the three groups (MATCHED, OVER, and UNDER) had comparable values and offsets from age-adjusted patient reported outcome. However, for SVA groups, patients in UNDER had significantly worse HRQOL than the two other groups. Patients in PT, PI-LL, and SVA UNDER groups were significantly younger than the other groups, P < 0.05.Conclusion: At 2 years after adult spinal deformity surgical treatment, only 24.3% to 33.1% of the patients reached age-adjusted alignment thresholds. Those under corrected in SVA demonstrated worse clinical outcomes. No significant improvements were found between matched and overcorrected patients, with overcorrection being an established risk for proximal junctional kyphosis. These results further emphasize the need for patient specific operative planning.Level Of Evidence: 3. [ABSTRACT FROM AUTHOR]

Published
2018
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215. Operative Management of Adult Spinal Deformity Results in Significant Increases in QALYs Gained Compared to Nonoperative Management: Analysis of 479 Patients With Minimum 2-Year Follow-Up.

Author

Scheer, Justin K., Hostin, Richard, Robinson, Chessie, Schwab, Frank, Lafage, Virginie, Burton, Douglas C., Hart, Robert A., Kelly, Michael P., Keefe, Malla, Polly, David, Bess, Shay, Shaffrey, Christopher I., Smith, Justin S., Ames, Christopher P., and International Spine Study Group

Subjects
*QUALITY-adjusted life years, *SPINAL cord abnormalities, *DATABASES, *POSTOPERATIVE care, *DATA analysis, *HEALTH surveys, *SPINE diseases, *QUALITY of life, *QUESTIONNAIRES, *TREATMENT effectiveness, *RETROSPECTIVE studies, *DESCRIPTIVE statistics, *ADULTS
Abstract

Study Design: Retrospective review of prospective multicenter adult spinal deformity (ASD) database.Objective: To compare the quality-adjusted life years (QALYs) between operative and nonoperative treatments for ASD patients.Summary Of Background Data: Operative management of ASD repeatedly demonstrates improvements in HRQOL over nonoperative treatment. However, little is reported regarding QALY improvements after surgical correction of ASD.Methods: Inclusion criteria: ≥18 years, ASD. Health utility values were calculated from SF6D scores and used to calculate QALYs at minimum 2 years from the baseline utility value as well as at 1, 2, and 3 years for the available patients. A 1:1 propensity score matching using six baseline variables was conducted to account for the nonrandom distribution of operative and nonoperative treatments.Results: Four hundred seventy-nine patients were included (OP:258, 70.7%, NONOP:221, 47.1%). One hundred fifty-one (OP:90, NONOP:61) had complete 1, 2, and 3 year data available for QALY trending. Unmatched results are not listed in the abstract. Mean baseline utility scores were statistically similar between the matched groups (OP: 0.609 ± 0.093, NONOP: 0.600 ± 0.091, P = 0.6401) and at 2 year min postop mean OP QALY was greater than NONOP (1.377 ± 0.345 vs. 1.256 ± 0.286, respectively, P < 0.01). For the subanalysis cohort, mean OP QALYs at 1, 2, and 3 years postoperative were all significantly greater than NONOP, P < 0.03 for all (1 yr: 0.651 ± 0.089 vs. 0.61 ± 0.079, 2 yr: 1.29 ± 0.157 vs. 1.189 ± 0.141, and 3 yr: 1.903 ± 0.235 vs. 1.749 ± 0.198, respectively). Matched OP had a larger QALYs gained (from baseline) at 2 year minimum postoperative (0.112 ± 0.243 vs. 0.008 ± 0.195, P < 0.01). For subanalysis of patients with complete 1 to 3 years data, OP had a significantly larger QALYs gained at 1, 2, and 3 years compared with NONOP: 1 year (0.073 ± 0.121 vs. 0.029 ± 0.082, P = 0.0447), 2 years (0.167 ± 0.232 vs. 0.036 ± 0.173, P = 0.0030), and 3years (0.238 ± 0.379 vs. 0.059 ± 0.258, P < 0.01).Conclusion: The operative treatment of adult spinal deformity results in significantly greater mean QALYs and QALYs gained at minimum 2 years postop as well as at the 1-, 2-, and 3-year time points compared with nonoperative management.Level Of Evidence: 3. [ABSTRACT FROM AUTHOR]

Published
2018
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216. Prospective multi-centric evaluation of upper cervical and infra-cervical sagittal compensatory alignment in patients with adult cervical deformity.

Author

Ramchandran, Subaraman, Protopsaltis, Themistocles S., Sciubba, Daniel, Scheer, Justin K., Jalai, Cyrus M., Daniels, Alan, Passias, Peter G., Lafage, Virginie, Kim, Han Jo, Mundis, Gregory, Klineberg, Eric, Hart, Robert A., Smith, Justin S., Shaffrey, Christopher, Ames, Christopher P., and International Spine Study Group

Subjects
CERVICAL vertebrae diseases, DISEASES in adults, LUMBAR vertebrae, LONGITUDINAL method, MEDICAL databases
Abstract

Purpose: Reciprocal mechanisms for standing alignment have been described in thoraco-lumbar deformity but have not been studied in patients with primary cervical deformity (CD). The purpose of this study is to report upper- and infra-cervical sagittal compensatory mechanisms in patients with CD and evaluate their changes post-operatively.Methods: Global spinal alignment was studied in a prospective database of operative CD patients. Inclusion criteria were any of the following: cervical kyphosis (CK) > 10°, cervical scoliosis > 10°, cSVA (C2-C7 Sagittal vertical axis) > 4 cm or CBVA (Chin Brow Vertical Angle) > 25°. For this study, patients who had previous fusion outside C2 to T4 segments were excluded. Patients were sub-classified by increasing severity of cervical kyphosis [CL (cervical lordosis): < 0°, CK-low 0°-10°, CK-high > 10°] and cSVA (cSVA-low 0-4 cm, cSVA-mid 4-6 cm, cSVA-high > 6 cm) and were compared for pre- and 3-month post-operative regional and global sagittal alignment to determine compensatory recruitment.Results: 75 CD patients (mean age 61.3 years, 56% women) were included. Patients with progressively larger CK had a progressive increase in C0-C2 (CL = 34°, CK-low = 37°, CK-high = 44°, p = 0.004), C2Slope and T1Slope-CL (p < 0.05). As the cSVA increased, there was progressive increase in C2Slope, T1Slope and TS-CL (p < 0.05) and patients compensated through increasing C0-C2 (cSVA-low = 33°, cSVA-mid = 40°, cSVA-high = 43°, p = 0.007) and pelvic tilt (cSVA-low = 14.9°, cSVA-mid = 24.1°, cSVA-high = 24.9°, p = 0.02). At 3 months post-op, with significant improvement in cervical alignment, there was relaxation of C0-C2 (39°-35°, p = 0.01) which positively correlated with magnitude of deformity correction.Conclusions: Patients with cervical malalignment compensate with upper cervical hyper-lordosis, presumably for the maintenance of horizontal gaze. As cSVA increases, patients also tend to exhibit increased pelvic retroversion. Following surgical treatment, there was relaxation of upper cervical compensation. [ABSTRACT FROM AUTHOR]

Published
2018
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217. Comparison of Best Versus Worst Clinical Outcomes for Adult Cervical Deformity Surgery

Author

Smith, Justin S., Shaffrey, Christopher I., Kim, Han Jo, Passias, Peter, Protopsaltis, Themistocles, Lafage, Renaud, Mundis, Gregory M., Klineberg, Eric, Lafage, Virginie, Schwab, Frank J., Scheer, Justin K., Kelly, Michael, Hamilton, D. Kojo, Gupta, Munish, Deviren, Vedat, Hostin, Richard, Albert, Todd, Riew, K. Daniel, Hart, Robert, Burton, Doug, Bess, Shay, and Ames, Christopher P.

Abstract

Study Design: Retrospective cohort study.Objective: Factors that predict outcomes for adult cervical spine deformity (ACSD) have not been well defined. To compare ACSD patients with best versus worst outcomes.Methods: This study was based on a prospective, multicenter observational ACSD cohort. Best versus worst outcomes were compared based on Neck Disability Index (NDI), Neck Pain Numeric Rating Scale (NP-NRS), and modified Japanese Orthopaedic Association (mJOA) scores.Results: Of 111 patients, 80 (72%) had minimum 1-year follow-up. For NDI, compared with best outcome patients (n = 28), worst outcome patients (n = 32) were more likely to have had a major complication (P= .004) and to have undergone a posterior-only procedure (P= .039), had greater Charlson Comorbidity Index (P= .009), and had worse postoperative C7-S1 sagittal vertical axis (SVA; P= .027). For NP-NRS, compared with best outcome patients (n = 26), worst outcome patients (n = 18) were younger (P= .045), had worse baseline NP-NRS (P= .034), and were more likely to have had a minor complication (P= .030). For the mJOA, compared with best outcome patients (n = 16), worst outcome patients (n = 18) were more likely to have had a major complication (P= .007) and to have a better baseline mJOA (P= .030). Multivariate models for NDI included posterior-only surgery (P= .006), major complication (P= .002), and postoperative C7-S1 SVA (P= .012); models for NP-NRS included baseline NP-NRS (P= .009), age (P= .017), and posterior-only surgery (P= .038); and models for mJOA included major complication (P= .008).Conclusions: Factors distinguishing best and worst ACSD surgery outcomes included patient, surgical, and radiographic factors. These findings suggest areas that may warrant greater awareness to optimize patient counseling and outcomes.

Published
2019
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218. Outcomes of Fusions From the Cervical Spine to the Pelvis

Author

Iyer, Sravisht, Kim, Han Jo, Theologis, Alexander, Nemani, Venu M., Albert, Todd J., Lenke, Lawrence G., Burch, Shane, Boachie-Adjei, Oheneba, Deviren, Vedat, Protopsaltis, Themistocles S., Smith, Justin S., Scheer, Justin K., Mizutani, Jun, Kleinberg, Eric O., and Ames, Christopher P.

Abstract

Study Design: Retrospective cohort study.Objective: Determine the indications, complications, and clinical outcomes in patients requiring fusions from the cervical spine to the pelvis. Several investigators have examined fusions from the thoracic spine to the sacrum, but no similar study has been performed for cervical-to-pelvis fusions.Methods: Patients from 2003 to 2014 with an upper instrumented vertebrae (UIV) in the cervical spine (any level) and a lower instrumented vertebrae (LIV) in the sacrum or pelvis were included in the study. Those with infectious or acute trauma-related deformities were excluded. Patient demographics, medical history, diagnosis, operative procedure, and health-related quality of life measures were analyzed. Student’s ttest, Kruskal-Wallis test, and χ2test were used as appropriate; significance was set at P< .05 for all tests.Results: Fifty-five patients met inclusion criteria for the study. Average follow-up was 2.8 years. Proximal junctional kyphosis was the most common indication for cervical-to-pelvis fusions (36%). The most common UIV was C2 (29%) followed by C7 (24%). There was an average 31° correction in maximum kyphosis and a 3.3cm improvement in sagittal vertical axis. In adults, the rate of complication was 71.4%, with a major complication rate of 39.3% and reoperation rate of 53.6%. There was significant improvement in the Scoliosis Research Society (SRS-22r) score (3.0 to 3.5; P< .01).Conclusion: Proximal junctional kyphosis is the most common indication for patients requiring fusion to the cervical spine. Adult patients incur a significant risk of major complications and reoperations. However, significant improvement in SRS-22r outcomes are noted in these patients.

Published
2019
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220. Adult Cervical Deformity Patients Have Higher Baseline Frailty, Disability, and Comorbidities Compared With Complex Adult Thoracolumbar Deformity Patients: A Comparative Cohort Study of 616 Patients

Author

Smith, Justin S., Kelly, Michael P., Buell, Thomas J, Ben-Israel, David, Diebo, Bassel, Scheer, Justin K, Line, Breton, Lafage, Virginie, Lafage, Renaud, Klineberg, Eric, Kim, Han Jo, Passias, Peter, Gum, Jeffrey L., Kebaish, Khal, Mullin, Jeffrey P., Eastlack, Robert, Daniels, Alan, Soroceanu, Alex, Mundis, Gregory, Hostin, Richard, Protopsaltis, Themistocles S., Hamilton, D. Kojo, Gupta, Munish, Lewis, Stephen J., Schwab, Frank J., Lenke, Lawrence G., Shaffrey, Christopher I., Burton, Douglas, Ames, Christopher P., and Bess, Shay

Abstract

Study Design Multicenter comparative cohort.Objective Studies have shown markedly higher rates of complications and all-cause mortality following surgery for adult cervical deformity (ACD) compared with adult thoracolumbar deformity (ATLD), though the reasons for these differences remain unclear. Our objectives were to compare baseline frailty, disability, and comorbidities between ACD and complex ATLD patients undergoing surgery.Methods Two multicenter prospective adult spinal deformity registries were queried, one ATLD and one ACD. Baseline clinical and frailty measures were compared between the cohorts.Results 616 patients were identified (107 ACD and 509 ATLD). These groups had similar mean age (64.6 vs 60.8 years, respectively, P= .07). ACD patients were less likely to be women (51.9% vs 69.5%, P< .001) and had greater Charlson Comorbidity Index (1.5 vs .9, P< .001) and ASA grade (2.7 vs 2.4, P< .001). ACD patients had worse VR-12 Physical Component Score (PCS, 25.7 vs 29.9, P< .001) and PROMIS Physical Function Score (33.3 vs 35.3, P= .031). All frailty measures were significantly worse for ACD patients, including hand dynamometer (44.6 vs 55.6 lbs, P< .001), CSHA Clinical Frailty Score (CFS, 4.0 vs 3.2, P< .001), and Edmonton Frailty Scale (EFS, 5.15 vs 3.21, P< .001). Greater proportions of ACD patients were frail (22.9% vs 5.7%) or vulnerable (15.6% vs 10.9%) based on EFS (P< .001).Conclusions Compared with ATLD patients, ACD patients had worse baseline characteristics on all measures assessed (comorbidities/disability/frailty). These differences may help account for greater risk of complications and all-cause mortality previously observed in ACD patients and facilitate strategies for better preoperative optimization.

Published
2024
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221. Association between preoperative cervical sagittal deformity and inferior outcomes at 2-year follow-up in patients with adult thoracolumbar deformity: analysis of 182 patients

Author

Scheer, Justin K., primary, Passias, Peter G., additional, Sorocean, Alexandra M., additional, Boniello, Anthony J., additional, Mundis, Gregory M., additional, Klineberg, Eric, additional, Kim, Han Jo, additional, Protopsaltis, Themistocles S., additional, Gupta, Munish, additional, Bess, Shay, additional, Shaffrey, Christopher I., additional, Schwab, Frank, additional, Lafage, Virginie, additional, Smith, Justin S., additional, Ames, Christopher P., additional, and _, _, additional

Published
2016
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222. Novel Method Using Baseline Normalization and Area Under the Curve to Evaluate Differences in Outcome Between Treatment Groups and Application to Patients With Cervical Spondylotic Myelopathy Undergoing Anterior Versus Posterior Surgery

Author

Liu, Shian, primary, Tetreault, Lindsay, additional, Fehlings, Michael G., additional, Challier, Vincent, additional, Smith, Justin S., additional, Shaffrey, Christopher I., additional, Arnold, Paul M., additional, Scheer, Justin K., additional, Chapman, Jens R., additional, Kopjar, Branko, additional, Protopsaltis, Themistocles S., additional, Lafage, Virginie, additional, Schwab, Frank, additional, Massicotte, Eric M., additional, Yoon, Sangwook T., additional, and Ames, Christopher P., additional

Published
2015
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224. Reliability assessment of a novel cervical spine deformity classification system

Author

Ames, Christopher P., primary, Smith, Justin S., additional, Eastlack, Robert, additional, Blaskiewicz, Donald J., additional, Shaffrey, Christopher I., additional, Schwab, Frank, additional, Bess, Shay, additional, Kim, Han Jo, additional, Mundis, Gregory M., additional, Klineberg, Eric, additional, Gupta, Munish, additional, O’Brien, Michael, additional, Hostin, Richard, additional, Scheer, Justin K., additional, Protopsaltis, Themistocles S., additional, Fu, Kai-Ming G., additional, Hart, Robert, additional, Albert, Todd J., additional, Riew, K. Daniel, additional, Fehlings, Michael G., additional, Deviren, Vedat, additional, Lafage, Virginie, additional, and _, _, additional

Published
2015
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225. A Comprehensive Review of Complication Rates After Surgery for Adult Deformity: A Reference for Informed Consent

Author

Sciubba, Daniel M., primary, Yurter, Alp, additional, Smith, Justin S., additional, Kelly, Michael P., additional, Scheer, Justin K., additional, Goodwin, C. Rory, additional, Lafage, Virginie, additional, Hart, Robert A., additional, Bess, Shay, additional, Kebaish, Khaled, additional, Schwab, Frank, additional, Shaffrey, Christopher I., additional, and Ames, Christopher P., additional

Published
2015
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226. Assessment of impact of standing long-cassette radiographs on surgical planning for lumbar pathology: an international survey of spine surgeons

Author

Maggio, Dominic, primary, Ailon, Tamir T., additional, Smith, Justin S., additional, Shaffrey, Christopher I., additional, Lafage, Virginie, additional, Schwab, Frank, additional, Haid, Regis W., additional, Protopsaltis, Themistocles, additional, Klineberg, Eric, additional, Scheer, Justin K., additional, Bess, Shay, additional, Arnold, Paul M., additional, Chapman, Jens, additional, Fehlings, Michael G., additional, Ames, Christopher, additional, and _, _, additional

Published
2015
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227. Postoperative Recovery After Adult Spinal Deformity Surgery

Author

Scheer, Justin K., primary, Mundis, Gregory M., additional, Klineberg, Eric, additional, Hart, Robert A., additional, Deviren, Vedat, additional, Nguyen, Stacie, additional, Protopsaltis, Themistocles S., additional, Gupta, Munish, additional, Bess, Shay, additional, Shaffrey, Christopher I., additional, Schwab, Frank, additional, Lafage, Virginie, additional, Smith, Justin S., additional, and Ames, Christopher P., additional

Published
2015
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230. The likelihood of reaching minimum clinically important difference and substantial clinical benefit at 2 years following a 3-column osteotomy: analysis of 140 patients

Author

Fakurnejad, Shayan, primary, Scheer, Justin K., additional, Lafage, Virginie, additional, Smith, Justin S., additional, Deviren, Vedat, additional, Hostin, Richard, additional, Mundis, Gregory M., additional, Burton, Douglas C., additional, Klineberg, Eric, additional, Gupta, Munish, additional, Kebaish, Khaled, additional, Shaffrey, Christopher I., additional, Bess, Shay, additional, Schwab, Frank, additional, Ames, Christopher P., additional, and _, _, additional

Published
2015
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231. Which Daily Functions Are Most Affected by Stiffness Following Total Lumbar Fusion

Author

Sciubba, Daniel M., primary, Scheer, Justin K., additional, Smith, Justin S., additional, Lafage, Virginie, additional, Klineberg, Eric, additional, Gupta, Munish, additional, Mundis, Gregory M., additional, Protopsaltis, Themistocles S., additional, Kim, Han Jo, additional, Hiratzka, Jayme R., additional, Koski, Tyler, additional, Shaffrey, Christopher I., additional, Bess, Shay, additional, Hart, Robert A., additional, and Ames, Christopher P., additional

Published
2015
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232. Comparison of best versus worst clinical outcomes for adult spinal deformity surgery: a retrospective review of a prospectively collected, multicenter database with 2-year follow-up

Author

Smith, Justin S., primary, Shaffrey, Christopher I., additional, Lafage, Virginie, additional, Schwab, Frank, additional, Scheer, Justin K., additional, Protopsaltis, Themistocles, additional, Klineberg, Eric, additional, Gupta, Munish, additional, Hostin, Richard, additional, Fu, Kai-Ming G., additional, Mundis, Gregory M., additional, Kim, Han Jo, additional, Deviren, Vedat, additional, Soroceanu, Alex, additional, Hart, Robert A., additional, Burton, Douglas C., additional, Bess, Shay, additional, Ames, Christopher P., additional, and _, _, additional

Published
2015
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233. 170 Operative Management of Adult Spinal Deformity Results in Significant Increases in QALYs Gained Compared With Nonoperative Management

Author

Scheer, Justin K., primary, Hostin, Richard A., additional, Schwab, Frank, additional, Robinson, Chessie, additional, Lafage, Virginie, additional, Burton, Douglas C., additional, Hart, Robert, additional, Kelly, Michael P., additional, Keefe, Malla, additional, Polly, David W., additional, Bess, Shay, additional, Shaffrey, Christopher I., additional, Smith, Justin S., additional, and Ames, Christopher P., additional

Published
2015
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234. How the neck affects the back: changes in regional cervical sagittal alignment correlate to HRQOL improvement in adult thoracolumbar deformity patients at 2-year follow-up

Author

Protopsaltis, Themistocles S., primary, Scheer, Justin K., additional, Terran, Jamie S., additional, Smith, Justin S., additional, Hamilton, D. Kojo, additional, Kim, Han Jo, additional, Mundis, Greg M., additional, Hart, Robert A., additional, McCarthy, Ian M., additional, Klineberg, Eric, additional, Lafage, Virginie, additional, Bess, Shay, additional, Schwab, Frank, additional, Shaffrey, Christopher I., additional, Ames, Christopher P., additional, and _, _, additional

Published
2015
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236. Adult Spinal Deformity Patients Recall Fewer Than 50% of the Risks Discussed in the Informed Consent Process Preoperatively and the Recall Rate Worsens Significantly in the Postoperative Period

Author

Saigal, Rajiv, primary, Clark, Aaron J., additional, Scheer, Justin K., additional, Smith, Justin S., additional, Bess, Shay, additional, Mummaneni, Praveen V., additional, McCarthy, Ian M., additional, Hart, Robert A., additional, Kebaish, Khaled M., additional, Klineberg, Eric O., additional, Deviren, Vedat, additional, Schwab, Frank, additional, Shaffrey, Christopher I., additional, and Ames, Christopher P., additional

Published
2015
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238. Cervical compensatory alignment changes following correction of adult thoracic deformity: a multicenter experience in 57 patients with a 2-year follow-up

Author

Oh, Taemin, primary, Scheer, Justin K., additional, Eastlack, Robert, additional, Smith, Justin S., additional, Lafage, Virginie, additional, Protopsaltis, Themistocles S., additional, Klineberg, Eric, additional, Passias, Peter G., additional, Deviren, Vedat, additional, Hostin, Richard, additional, Gupta, Munish, additional, Bess, Shay, additional, Schwab, Frank, additional, Shaffrey, Christopher I., additional, and Ames, Christopher P., additional

Published
2015
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239. Results of the 2014 SRS Survey on PJK/PJF

Author

Scheer, Justin K., primary, Fakurnejad, Shayan, additional, Lau, Darryl, additional, Daubs, Michael D., additional, Coe, Jeffrey D., additional, Paonessa, Kenneth J., additional, LaGrone, Michael O., additional, Amaral, Rodrigo A., additional, Trobisch, Per D., additional, Lee, Jung-Hee, additional, Fabris-Monterumici, Daniel, additional, Anand, Neel, additional, Cree, Andrew K., additional, Hart, Robert A., additional, Hey, Lloyd A., additional, and Ames, Christopher P., additional

Published
2015
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240. Comprehensive study of back and leg pain improvements after adult spinal deformity surgery: analysis of 421 patients with 2-year follow-up and of the impact of the surgery on treatment satisfaction

Author

Scheer, Justin K., primary, Smith, Justin S., additional, Clark, Aaron J., additional, Lafage, Virginie, additional, Kim, Han Jo, additional, Rolston, John D., additional, Eastlack, Robert, additional, Hart, Robert A., additional, Protopsaltis, Themistocles S., additional, Kelly, Michael P., additional, Kebaish, Khaled, additional, Gupta, Munish, additional, Klineberg, Eric, additional, Hostin, Richard, additional, Shaffrey, Christopher I., additional, Schwab, Frank, additional, Ames, Christopher P., additional, and _, _, additional

Published
2015
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242. Postoperative Cervical Deformity in 215 Thoracolumbar Patients With Adult Spinal Deformity

Author

Passias, Peter G., primary, Soroceanu, Alex, additional, Smith, Justin, additional, Boniello, Anthony, additional, Yang, Sun, additional, Scheer, Justin K., additional, Schwab, Frank, additional, Shaffrey, Christopher, additional, Kim, Han Jo, additional, Protopsaltis, Themistocles, additional, Mundis, Gregory, additional, Gupta, Munish, additional, Klineberg, Eric, additional, Lafage, Virginie, additional, and Ames, Christopher, additional

Published
2015
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248. P28 - Incidence and Outcomes of Neurological Complications in 176 Adult Spinal Deformity Patients Treated with Three-Column Osteotomy

Author

Smith, Justin S., Shaffrey, Christopher I., Gupta, Munish C., Klineberg, Eric O., Lafage, Virginie, Schwab, Frank J., Kim, Han Jo, Passias, Peter G., Protopsaltis, Themistocles S., Lafage, Renaud, Mundis, Gregory M., Jr., Scheer, Justin K., Kelly, Michael P., Hamilton, D. Kojo, Soroceanu, Alexandra, Daniels, Alan H., Deviren, Vedat, Hostin, Richard A., Jr., Hart, Robert A., Burton, Douglas C., Bess, Shay, and Ames, Christopher P.

Published
2017
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249. 216 - ASD-SR Invasiveness Index Predicts the Magnitude of Deformity Surgery Essential to Stage to Reduce the Risk of Complications

Author

Neuman, Brian J., Raad, Micheal, Klineberg, Eric O., Sciubba, Daniel M., Mundis, Gregory M., Jr., Passias, Peter G., Scheer, Justin K., Gum, Jeffrey L., Kebaish, Khaled M., Hamilton, D. Kojo, Protopsaltis, Themistocles S., Line, Breton, Smith, Justin S., Ames, Christopher P., and Group, International Spine Study

Published
2017
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250. 17 - Prospective Multicenter Assessment of All-Cause Mortality following Surgery for Adult Cervical Deformity

Author

Smith, Justin S., Shaffrey, Christopher I., Kim, Han Jo, Passias, Peter G., Protopsaltis, Themistocles S., Lafage, Renaud, Mundis, Gregory M., Jr., Klineberg, Eric O., Lafage, Virginie, Schwab, Frank J., Scheer, Justin K., Kelly, Michael P., Hamilton, D. Kojo, Deviren, Vedat, Hostin, Richard A., Jr., Albert, Todd J., Riew, K. Daniel, Hart, Robert A., Burton, Douglas C., Bess, Shay, and Ames, Christopher P.

Published
2017
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