Phase 4 Study in Adult Subjects Undergoing Posterior Lumbar Spine Surgeries

Primary Objective: The primary objective of this study is to compare postsurgical opioid consumption through 72 hours postsurgery in patients receiving local infiltration analgesia (LIA) with EXPAREL and bupivacaine HCl (EXPAREL group) with that of patients receiving standard of care (SOC) (control group) in adult subjects undergoing posterior lumbar spine surgeries where both groups are receiving a multimodal pain regimen. Secondary Objectives: The secondary objectives of this study are to: 1. Compare safety and effectiveness outcomes following LIA with EXPAREL and bupivacaine hydrochloride (HCl) versus SOC in adult subjects undergoing posterior lumbar spine surgeries through 72 hours, including time to first opioid and opioid-related adverse events (ORAEs). 2. Compare health outcomes following LIA with EXPAREL and bupivacaine hydrochloride (HCl) versus SOC in adult subjects undergoing posterior lumbar spine surgeries, including discharge readiness, hospital (or other facility) length of stay (LOS), discharge disposition, hospital readmissions, and health service utilization.