183 Success of Seven-Day Intra-Articular Antibiotic Irrigation for the Treatment of Chronic Periprosthetic Joint Infection: 12-Month Results from Two Prospective Randomized Comparative Studies. ♢

e611 Impact of Predictive Hemodynamic Monitoring on Intra-operative Hypotension and Postoperative Complications in Multi-level Spinal Fusion Surgery

e622 Accuracy of Phantomless Calibration of Routine Computed Tomography Scans for Opportunistic Osteoporosis Screening in the Spine Clinic ♢

P258 Durability of Lumbar Discectomy: A Survivorship Analysis Based on Reoperation Rates