Comparison of Postoperative Opioid Use and Functional Outcome in Ultrasound-guided ESP Block vs. Local Infiltration in Lumbar Fusion Surgery.

STUDY DESIGN: Prospective nonrandomized case-control study (level III). OBJECTIVE: This study aims to evaluate the efficacy of ultrasound-guided ESPB versus LWI in postoperative analgesia and functional recovery following lumbar fusion surgeries. SUM…

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