364 A Systematic Approach to Imaging of Three-Column Fractures in the Ankylosed Spine

366 The Spinal Instability Neoplastic Score is Predictive of Instability Necessitating Surgical Intervention: An External Validation Study

416 Perioperative Change in Bone Quality following Posterior Cervical Fusion and its Effects on Postoperative Outcomes

e476 Pittsburgh Instability Tool Risk Assessment Score Evaluates Failure Risk in On-Track Shoulders Undergoing Primary Arthroscopic Anterior Stabilization with or without Remplissage

e532 The Impact of Interbody Surface Roughness on Radiographic and Clinical Outcomes after Transforaminal Lumbar Interbody Fusion