Cannabis Use Disorder Trends and Health Care Utilization Following Cervical and Lumbar Spine Fusions.

No differences in reoperation rates were observed for CUD groups undergoing cervical or lumbar fusion. CUD was associated with increased risk of stroke for the cervical fusion cohort, and cardiac (including MI) and pulmonary complications for lumbar fusion at index hospitalization, and 6 and 12 months postoperatively. Opiate use disorder and decreased opiate dependence following surgery also correlated with CUD.