1. An In Vitro Biomechanical Study on Ovine Rib Flexibility With Increasing Deconstruction—As an Alternative to Rib Resection for Costoplasty

   • Matthew Hughes
   • Jason Bernard
   • Matthew Szarko

   Biomechanics 30 December 2018 Pages: 99 - 104

2. The Berbeo-Sardi Angle (BSA): An Innovative Method to Effectively Estimate Pelvic Retroversion in Anteroposterior Radiographs—A Correlation With Traditional Parameters

   • Juan P. Sardi
   • Jorge E. Camacho
   • Miguel E. Berbeo

   Case Series 30 December 2018 Pages: 105 - 111

3. Vertebral Axial Asymmetry in Adolescent Idiopathic Scoliosis

   • Ludvig Vavruch
   • Daniel Forsberg
   • Hans Tropp

   OriginalPaper 30 December 2018 Pages: 112 - 121

4. Building Consensus: Development of Best Practice Guidelines on Wrong Level Surgery in Spinal Deformity

   • Michael Vitale
   • Anas Minkara
   • Lawrence Lenke

   OriginalPaper 30 December 2018 Pages: 121 - 129

5. Accuracy of S2 Alar-Iliac Screw Placement Under Robotic Guidance

   • Joseph L. Laratta
   • Jamal N. Shillingford
   • Ronald A. Lehman

   OriginalPaper 30 December 2018 Pages: 130 - 136

6. Who Needs a Pediatric Intensive Care Unit After Posterior Spinal Fusion for Adolescent Idiopathic Scoliosis?

   • Lawrence L. Haber
   • Erika D. Womack
   • Michael Wade Shrader

   OriginalPaper 30 December 2018 Pages: 137 - 140

7. Deep Vein Thrombosis After Complex Posterior Spine Surgery: Does Staged Surgery Make a Difference?

   • Charles C. Edwards II
   • Noah L. Lessing
   • Charles C. Edwards

   OriginalPaper 30 December 2018 Pages: 141 - 147

8. Ethnic Variation in Satisfaction and Appearance Concerns in Adolescents With Idiopathic Scoliosis Undergoing Posterior Spinal Fusion With Instrumentation

   • Alexander A. Theologis
   • Matthew Crawford
   • Spinal Deformity Study Group

   OriginalPaper 30 December 2018 Pages: 148 - 155

9. Evidence-Based Thresholds for the Volume-Value Relationship in Adolescent Idiopathic Scoliosis: Outcomes and Economies of Scale

   • Sergio M. Navarro
   • Prem N. Ramkumar
   • Ryan C. Goodwin

   OriginalPaper 30 December 2018 Pages: 156 - 163

10. Additional Risk Factors for Adding-On After Selective Thoracic Fusion in Adolescent Idiopathic Scoliosis: Implication of Lowest Instrumented Vertebra Angle and Lumbosacral Takeoff

    • Woojin Cho
    • Michael J. Faloon
    • Oheneba Boachie-Adjei

    OriginalPaper 30 December 2018 Pages: 164 - 169

11. Bone Mineral Density After Spinal Fusion Surgery for Adolescent Idiopathic Scoliosis at a Minimum 20-Year Follow-up

    • Masayuki Ohashi
    • Toru Hirano
    • Naoto Endo

    OriginalPaper 30 December 2018 Pages: 170 - 176

12. Reciprocal Changes in Sagittal Alignment With Operative Treatment of Adolescent Scheuermann Kyphosis—Prospective Evaluation of 96 Patients

    • Baron S. Lonner
    • Stefan Parent
    • Peter O. Newton

    OriginalPaper 30 December 2018 Pages: 177 - 184

13. Current Evidence Regarding the Diagnostic Methods for Pediatric Lumbar Spondylolisthesis: A Report From the Scoliosis Research Society Evidence Based Medicine Committee

    • Han Jo Kim
    • Charles H. Crawford III
    • Douglas Burton

    OriginalPaper 30 December 2018 Pages: 185 - 188

14. Safety of a High-Dose Tranexamic Acid Protocol in Complex Adult Spinal Deformity: Analysis of 100 Consecutive Cases

    • James D. Lin
    • Lawrence G. Lenke
    • Ronald A. Lehman Jr

    OriginalPaper 30 December 2018 Pages: 189 - 194