Observational studyCanadian journal of anaesthesia = Journal canadien d'anesthesie2019
Anatomical evaluation of the extent of spread in the erector spinae plane block: a cadaveric study.
Observational study in Canadian journal of anaesthesia = Journal canadien d'anesthesie, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05716061 (Comparison of Median, Intermediate and Lateral Approach to Sacral Erector Spinae Plane Block), which is not on this map. Cited by 46 papers, 3 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Comparison of Median, Intermediate and Lateral Approach to Sacral Erector Spinae Plane Block: a Cadaveric and Radiologic Study
Who cites it
46 citing papers in PubMed, 3 syntheses or guidelines pooled it, 129 citations in OpenAlex.
- Erector spinae plane block in pediatric surgery: a systematic review and meta-analysis.BMC anesthesiology · 2026Pooled it
- Analgesic effects of erector spinae plane block for patients after breast surgery: a systematic review and meta-analysis.The Journal of international medical research · 2021Pooled it
- Ultrasound-guided erector spinae plane block for postoperative analgesia: a meta-analysis of randomized controlled trials.BMC anesthesiology · 2020Pooled it
- Erector spinae plane block for opioid sparing in children undergoing laparoscopic appendectomy: a randomized controlled trial.Frontiers in pediatrics · 2026Trial
- Influence of different patient positions on erector spinae plane block spread in modified radical mastectomy: a prospective randomized comparative study.BMC anesthesiology · 2025Trial
- Anterior quadratus lumborum block is superior to erector spinae plane block for analgesia after renal transplantation: a randomized controlled trial.BMC anesthesiology · 2025Trial
- Comparison of Costotransverse Foramen Block with Thoracic Paravertebral Block and Erector Spinae Plane Block for Patients Undergoing Video-Assisted Thoracoscopic Surgery: A Randomized Controlled Non-Inferiority Trial.Journal of pain research · 2025Trial
- Efficacy of Erector Spinae Plane Block on Postoperative Analgesia for Patients Undergoing Metabolic Bariatric Surgery: A Randomized Controlled Trial.Obesity surgery · 2024Trial
- Effectiveness of the Bilateral and Bilevel Erector Spinae Plane Block (ESPB) in Pediatric Idiopathic Scoliosis Surgery: A Randomized, Double-Blinded, Controlled Trial.Journal of pediatric orthopedics · 2024Trial
- Comparison of the effects of one-level and bi-level pre-incisional erector spinae plane block on postoperative acute pain in video-assisted thoracoscopic surgery; a prospective, randomized, double-blind trial.BMC anesthesiology · 2023Trial
- Trial
- Effect of ultrasound-guided erector spinae plane block on post-surgical pain in patients undergoing nephrectomy: a single-center, randomized, double-blind, controlled trial.The Journal of international medical research · 2022Trial
- Findings and limitations of cadaveric studies in plan A blocks: a narrative review.Journal of anesthesia · 2026Review
- Anatomical evaluation of injectate spread in thoraco-lumbar interfascial plane block and lumbar erector spinae plane block: A cadaveric study.Indian journal of anaesthesia · 2026Article
- Comparison of Longitudinal and Transverse Approaches for Ultrasound-Guided Lumbar Erector Spinae Plane Block in Feline Cadavers.Veterinary sciences · 2026Article
- Comparison of erector spinae plane, paravertebral, and pectoral nerve blocks on postoperative analgesia and Quality of Recovery-15 in patients undergoing mastectomy: a prospective randomized trial.Perioperative medicine (London, England) · 2026Article
- Intercostal nerve blocks take the lead: rethinking regional analgesia for video-assisted thoracic surgery.Journal of thoracic disease · 2026Article
- Efficacy of Erector Spinae Plane Block in Lumbar Fusion Surgery: A Systematic Review and Meta-Analysis on Opioid-Sparing and Postoperative Pain Outcomes.Journal of pain research · 2026Review
- Investigation of the extent of injectate after single-level thoracic erector spinae plane injection: A cadaveric study.Indian journal of anaesthesia · 2026Article
- Article
Corrections and comments
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Authors and funding
6 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe erector spinae plane (ESP) block is an interfascial analgesic technique first described as an alternative for pain control at the thoracic level. The objective of this observational study was to determine the anatomical spread of dye following a T7 ESP block in a cadaveric model.
methodsAn ultrasound-guided ESP block was performed in four fresh human cadavers using an in-plane approach with a linear probe in a longitudinal orientation and a puncture in a craniocaudal direction. Twenty millilitres of an iodinated contrast/methylene blue solution was injected deep to the erector spinae muscle at the distal end of the T7 transverse process bilaterally in two of the specimens, and unilaterally in the other two (six ESP blocks in total). Subsequently, the specimens were subjected to a multi-slice computed tomography (CT) scan with three-dimensional reconstruction. Two of the specimens were dissected to evaluate the distribution of the contrast solution, and a sectional study was performed in the other two.
resultsIn the six samples, evaluated by CT scan and anatomical dissection, a craniocaudal spread of the dye was observed in the dorsal region from T1-T11 with lateral extension towards the costotransverse region. No diffusion of contrast solution or dye to the anterior region (paravertebral space) was observed by CT scan or dissection.
conclusionsThe results suggest that the ESP block reaches a wide range of the posterior rami of spinal nerves without diffusion into the paravertebral space or involvement of the anterior rami.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.