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Darryl Lau, Andrew K. Chan, Alexander A. Theologis, Dean Chou, Praveen V. Mummaneni, Shane Burch, Sigurd Berven, Vedat Deviren and Christopher Ames

  Proximal junctional kyphosis requiring revision surgery 1 Metastatic tumors   Wound infection not requiring washout 4   Wound infection requiring washout 1   Dyspnea due to pleural effusion 2   Severe ileus 1   Tumor progression w/myelopathy requiring reoperation 1   Deep vein thrombosis requiring anticoagulation 1   Screw pullout & cage subsidence requiring revision surgery 1 Discussion This study utilizes a single institutional cohort to review the direct cost of hospitalization for spinal tumor surgery. Overall

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Alex Soroceanu, Douglas C. Burton, Bassel Georges Diebo, Justin S. Smith, Richard Hostin, Christopher I. Shaffrey, Oheneba Boachie-Adjei, Gregory M. Mundis Jr., Christopher Ames, Thomas J. Errico, Shay Bess, Munish C. Gupta, Robert A. Hart, Frank J. Schwab, Virginie Lafage and International Spine Study Group

surgery (p = 0.84), or radiographic complications (p = 0.62). Absolute weight (odds ratio 1.16, p = 0.064), rather than BMI (p = 0.80), showed a trend toward an increased risk of implant-related complications ( Table 4 ). TABLE 4. Multivariate poisson and logistic regression showing the IRR and odds ratio of specific complications in obese patients * Complications, 2 Yrs IRR/Odds Ratio p Value Neurological 0.03 0.881 Radiographic −0.139 0.626 Revision surgery 1.07 0.846 Infection 4.88 0.02 Implant (BMI

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Renaud Lafage, Ibrahim Obeid, Barthelemy Liabaud, Shay Bess, Douglas Burton, Justin S. Smith, Cyrus Jalai, Richard Hostin, Christopher I. Shaffrey, Christopher Ames, Han Jo Kim, Eric Klineberg, Frank Schwab, Virginie Lafage and the International Spine Study Group

effective as the posterior-only approach in ASD patients. 11 For ASD patients requiring aggressive corrections, 3-column osteotomies have revealed promising results. 5 , 7 However, despite satisfactory outcomes, revisions following correction surgery continue to occur. Among all complications requiring revision surgery, adjacent segmental pathologies, e.g., proximal junctional kyphosis (PJK), are among the most common and critical pathologies. 2 , 11 Risk factors predicting adjacent segmental pathology following ASD correction surgery have attracted considerable

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Dominic Maggio, Tamir T. Ailon, Justin S. Smith, Christopher I. Shaffrey, Virginie Lafage, Frank Schwab, Regis W. Haid Jr., Themistocles Protopsaltis, Eric Klineberg, Justin K. Scheer, Shay Bess, Paul M. Arnold, Jens Chapman, Michael G. Fehlings, Christopher Ames, AOSpine North America and International Spine Study Group

isolated lumbar pathology. We make this recommendation given the high prevalence of sagittal plane deformity in the adult population 42 and its impact on the development of ASP in patients undergoing posterior lumbosacral fusion. 9 , 21 , 26 , 30 , 37 , 41 , 46 ASP is an intriguing yet not fully understood occurrence, with a probable multifocal etiology; attempts to minimize ASP are important for minimizing the risk for revision surgery. 9 , 39 , 41 , 49 In general, reoperations above previous lumbar spine fusions are undesirable, as success rates have been reported

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Han Jo Kim, Sohrab Virk, Jonathan Elysee, Peter Passias, Christopher Ames, Christopher I. Shaffrey, Gregory Mundis Jr., Themistocles Protopsaltis, Munish Gupta, Eric Klineberg, Justin S. Smith, Douglas Burton, Frank Schwab, Virginie Lafage, Renaud Lafage and the International Spine Study Group

reconstructions, revision surgery would likely need to extend proximally past the cervicothoracic junction into the upper cervical spine. As with many issues in spinal surgery, and adult spinal deformity in particular, approaches for correction of a patient’s deformity remain controversial. 22 Patients in the focal deformity group, in contrast, might require focal correction. These patients likely do not have a large global CD, and addressing the specific levels with malalignment may provide significant correction. This might allow for constructs that stay within the cervical

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Ferran Pellisé, Miquel Serra-Burriel, Justin S. Smith, Sleiman Haddad, Michael P. Kelly, Alba Vila-Casademunt, Francisco Javier Sánchez Pérez-Grueso, Shay Bess, Jeffrey L. Gum, Douglas C. Burton, Emre Acaroğlu, Frank Kleinstück, Virginie Lafage, Ibrahim Obeid, Frank Schwab, Christopher I. Shaffrey, Ahmet Alanay, Christopher Ames, the International Spine Study Group and the European Spine Study Group

on the largest and most granular, prospective, mutually compatible, multicenter ASD data sets (International Spine Study Group [ISSG] and European Spine Study Group [ESSG]). The ability to predict which ASD patients are most likely to benefit from surgery and which patients are most likely to require revision surgery could have profound implications for treatment planning, patient counseling, and payment decision-making. 38 Methods Patient Population Two independent and compatible prospective multicenter ASD databases, one from the United States and the other from

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Kristina Bianco, Robert Norton, Frank Schwab, Justin S. Smith, Eric Klineberg, Ibrahim Obeid, Gregory Mundis Jr., Christopher I. Shaffrey, Khaled Kebaish, Richard Hostin, Robert Hart, Munish C. Gupta, Douglas Burton, Christopher Ames, Oheneba Boachie-Adjei, Themistocles S. Protopsaltis and Virginie Lafage

kyphosis, long fusion constructs, 3 or more medical comorbidities, excessive blood loss, and revision surgery. 2 , 6–8 , 11 , 13 While the incidence and risk factors for complications after 3CO have been defined, these definitions have come from primarily single-center studies with small patient populations. 2 , 8 , 13 In the present multicenter analysis we examined the complications of 3CO procedures for a larger patient population from 8 surgical centers and focused on the variability among the sites, an analysis that has not been previously done. The present study

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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

-pelvic parameters after surgery can be predicted: a preliminary formula and validation of standing alignment . Spine (Phila Pa 1976) 36 : 1037 – 1045 , 2011 12 Lau D , Funao H , Clark AJ , Nicholls F , Smith J , Bess S , : The clinical correlation of the Hart-ISSG Proximal Junctional Kyphosis Severity Scale with health-related quality-of-life outcomes and need for revision surgery . Spine (Phila Pa 1976) 41 : 213 – 223 , 2016 13 Malta M , Cardoso LO , Bastos FI , Magnanini MM , Silva CM : STROBE initiative: guidelines on reporting

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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

-pelvic parameters after surgery can be predicted: a preliminary formula and validation of standing alignment . Spine (Phila Pa 1976) 36 : 1037 – 1045 , 2011 12 Lau D , Funao H , Clark AJ , Nicholls F , Smith J , Bess S , : The clinical correlation of the Hart-ISSG Proximal Junctional Kyphosis Severity Scale with health-related quality-of-life outcomes and need for revision surgery . Spine (Phila Pa 1976) 41 : 213 – 223 , 2016 13 Malta M , Cardoso LO , Bastos FI , Magnanini MM , Silva CM : STROBE initiative: guidelines on reporting

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24 patients in the bedrest > 24 hr group. Comparing the bedrest ≤ 24 hr to bedrest> 24 hr patients, there was no statistically significant difference in the percentage of patients with complications related to the durotomy(headache, blood patch) (≤24 hours 39% vs> 24 hours 21%, p=0.12) or wound complications (22% vs 33%, p=0.21). There was no statistically significant difference in the incidence of revision surgery including for pseudomeningocele (11% vs 0%, p=0.18) or infection (0% vs 4%, p=0.57). There was a statistically significant decrease in the incidence of