Impact of Preoperative Marijuana Use on Functional Recovery and Complications After Spinopelvic Fusion in Adult Spinal Deformity

Abstract BACKGROUND AND OBJECTIVES: With the rising prevalence of marijuana use and increasing rates of complex spinal deformity surgeries, understanding the impact of cannabis on perioperative outcomes is crucial. Previous studies yield mixed results on fusion success, complications, and opioid use in spine surgery, but none have focused on long-segment spinopelvic fusions. METHODS: This retrospective cohort study analyzed 155 adult patients undergoing posterior spinal fusion from the pelvis to L2 or higher between 2015 and 2023. Patients were stratified by