Quadratus Lumborum & Ilioinguinal Block Quick Review
- Valkyrie Blog Team
- Oct 2
- 2 min read
This month, Valkyrie Simulators highlights two essential blocks—each with distinct anatomical targets and clinical applications. Whether you're training residents or refining your own practice, understanding when and why to choose each block is key.
Quadratus Lumborum (QL) Block
Category | Details |
Anatomical Focus | Deep fascial plane adjacent to the quadratus lumborum muscle |
Dermatomal Coverage | T7–L1 |
Indications | Cesarean section, laparotomy, abdominal wall surgery, enhanced recovery |
Advantages | Broad sensory coverage, longer analgesia (up to 24 hrs), visceral/somatic pain control |
Considerations | Technically more complex due to deeper anatomy, Requires precise ultrasound guidance and needle control, Higher risk of spread or vascular puncture |
Recent Study Highlight:
Indian Journal of Anaesthesia (2023): QL block provided longer analgesia and higher patient satisfaction in inguinal surgery. Read study
Egyptian Journal of Anaesthesia (2023): QL vs. IINB in inguinal hernioplastyQL block showed lower pain scores, longer analgesia, and reduced opioid use. Read study
Ilioinguinal (ILO) Block
Category | Details |
Anatomical Focus | Superficial nerve near the anterior superior iliac spine (ASIS) |
Dermatomal Coverage | L1 (groin, genitalia, inner thigh) |
Indications | Inguinal hernia repair, genital pain, post-herniorrhaphy neuralgia |
Advantages | Quick to perform, predictable anatomy, lower risk profile |
Considerations | More localized analgesia, shorter duration (typically 4–8 hours), may require supplemental analgesia for broader coverage |
Recent Study Highlight:
Egyptian Journal of Anaesthesia (2023): Compared to QL block, ILO block had shorter analgesia duration and higher opioid use post-hernia repair. Read study
Final Thoughts
Both blocks have their place in modern anesthesia. The QL block offers extended coverage and duration, ideal for major procedures and enhanced recovery protocols. The IINB remains a reliable, efficient choice for targeted analgesia with minimal complexity. Choosing between the QL and Ilioinguinal block depends on anatomical location, surgical indication, and desired analgesic coverage.
Be sure to revisit our 2023 blog post for foundational insights, and explore the recent studies above to stay current with evolving evidence.
Valkyrie’s Quadratus Lumborum and Ilioinguinal simulators are designed to reflect the tactile rand anatomical requirements for confident block placement. Whether you're teaching, learning, refreshing your skills for superficial nerve identification or deep fascial plane injections, our models support hands-on mastery for speed, confidence, and patient safety.
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