Yes, you can perform an ESP block at L2 for a TLIF L3-S1 procedure preoperatively.
Performing a bilateral erector spinae plane block at the L2 level preoperatively is a reasonable and evidence-supported approach for TLIF spanning L3-S1, with demonstrated benefits in reducing postoperative pain, opioid consumption, and improving early recovery outcomes.
Evidence Supporting ESP Block for Lumbar Spine Fusion
The 2026 ASA Practice Guidelines recognize erector spinae plane blocks as part of fascial plane blocks for perioperative pain management, though they focus primarily on cardiothoracic, mastectomy, and abdominal surgeries 1. However, multiple high-quality studies specifically address ESP blocks for lumbar fusion procedures:
Clinical Benefits Demonstrated
Pain Reduction:
- A 2022 randomized controlled trial showed superior quality of recovery at 24 hours (QoR-15 score: 117 vs 108, p<0.001) with preoperative bilateral ESP blocks in posterior lumbar interbody fusion 2
- A 2023 RCT demonstrated 16% reduction in pain with activity and lower NRS scores at 2,6,12,24, and 36 hours postoperatively 3
- A 2025 study found significantly lower pain scores in the recovery room (4.7 vs 6.7, p<0.01) and on postoperative day 1 (2.3 vs 2.8, p<0.01) 4
Opioid-Sparing Effects:
- 35% reduction in opioid consumption demonstrated in a 2023 retrospective study 5
- Reduced intraoperative fentanyl requirements (203.3 vs 322.0 micrograms, p=0.021) 3
- Lower morphine consumption at 48 hours postoperatively 3
Additional Benefits:
- Reduced intraoperative blood pressure variability (CV: 13.0% vs 14.7%, p=0.01) 4
- Decreased blood loss (268.3 mL vs 426.7 mL, p<0.01) 4
- Shorter hospital length of stay (2.74 vs 3.23 days, p=0.012) 6
- Higher patient satisfaction scores (8.4 vs 6.0, p<0.0001) 3
Technical Considerations for L2 Level Block
Why L2 is Appropriate for L3-S1 Surgery:
The L2 level provides adequate cranial-to-caudal spread of local anesthetic to cover the surgical field extending from L3 to S1. The erector spinae plane allows for longitudinal spread of injectate along the fascial plane, providing multi-level coverage 7.
Recommended Technique:
- Timing: Perform preoperatively after anesthesia induction 2, 3
- Approach: Bilateral blocks under ultrasound guidance
- Volume: 20-25 mL per side 2, 3, 8
- Local anesthetic: 0.375-0.4% ropivacaine or bupivacaine 2, 3, 8
- Adjuvant: Consider adding dexamethasone 4 mg per side 3
- Level: T12-L2 vertebral level (L2 is appropriate for your L3-S1 coverage)
Important Caveats
Controversy Acknowledged: The ASA guidelines note ongoing controversy within the regional anesthesia community regarding ESP block efficacy and technique variability 1. The block is not consistently performed the same way between practitioners, and various factors may influence injectate distribution and clinical effects.
Mixed Evidence on Quality of Recovery: One 2025 RCT found no significant difference in QoR-15 scores when ESP block was added to multimodal analgesia including wound infiltration 8. This suggests that when robust multimodal analgesia is already in place, the incremental benefit may be less pronounced.
Safety Profile: Multiple studies report no ESP block-related complications 2, 3, 4, supporting its safety profile when performed correctly.
Integration into Multimodal Analgesia
ESP block should be incorporated as part of a comprehensive multimodal analgesic regimen, not as a standalone intervention. Combine with:
- Systemic analgesics (acetaminophen, NSAIDs/COX-2 inhibitors)
- Appropriate opioid rescue medication
- Consider wound infiltration as an additional layer
- Early mobilization protocols
The evidence strongly supports performing bilateral ESP blocks at L2 for your TLIF L3-S1 procedure, with the most robust benefits seen in opioid reduction, early pain control, and improved patient satisfaction, particularly when performed preoperatively with appropriate technique and dosing.