e540 Development of a Modified Surgical Invasiveness Index for Minimally-Invasive Adult Spinal Deformity Surgery

e547 Durability of Substantial Clinical Benefit in Adult Spinal Deformity Corrective Surgery Patients: A Minimum 5-Year Outcomes Analysis

e763 Can Computed Tomography Hounsfield Units be Reliably Measured in the Setting of Proximal Humerus Fractures?