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June 10, 2025

How to Perform an Ultrasound-Guided Fascia Iliaca Plane Block

Written by: Allyson Hansen DO


Ultrasound-guided nerve blocks have become an essential tool in modern pain management, offering precise, effective, and safe regional anesthesia techniques. One such technique is the Fascia Iliaca Plane Block, which provides pain relief for femoral and hip fractures while minimizing the risks associated with direct nerve injections.

What is a Fascia Iliaca Plane Block?

The Fascia Iliaca Plane Block is a regional anesthesia technique that targets the femoral nerve by injecting anesthetic into the fascial plane rather than directly around the nerve itself. This method enhances patient safety while ensuring effective pain control. It is widely used as part of a multimodal pain management strategy, especially in orthopedic injuries like hip and femoral fractures.

Step-by-Step Guide

1. Positioning and Probe Selection

  • Begin by placing the patient in a supine position with the hip in a neutral alignment.
  • Use a linear ultrasound probe, as it provides high-resolution imaging of the anatomical structures needed for guidance.

2. Identifying Key Anatomical Structures

  • Start scanning at the inguinal crease.
  • Medially, locate the femoral artery and vein.
  • Just lateral to these vessels, identify the hyper-echoic femoral nerve.
  • Moving the probe laterally, find the iliacus muscle (deep structure) and sartorius muscle (superficial structure).
  • The fascial plane separating these two muscles is your target for the block.

3. Needle Insertion and Injection Technique

  • Using an in-plane technique, insert the needle from lateral to medial.
  • Advance the needle carefully until you feel a slight “pop”, indicating that you’ve entered the fascial plane.
  • Inject 1–2 cc of normal saline to confirm correct placement by observing the fascial plane "unzipping."
  • Once proper placement is confirmed, administer the preferred local anesthetic.

4. Confirming the Block

  • Watch for the spread of the anesthetic within the fascial plane.
  • If the solution pools or "bubbles up," adjust your needle depth by either advancing deeper or retracting slightly and reattempting the injection.
  • The ideal confirmation is depression of the iliacus muscle, ensuring effective anesthetic spread.

Why Choose the Fascia Iliaca Plane Block?

  • Safer than direct femoral nerve blocks – No direct injection into the nerve, reducing the risk of nerve injury.
  • Effective pain relief – Provides analgesia for hip and femoral fractures without excessive anesthetic dosing.
  • Easy to learn and perform – The use of ultrasound guidance ensures precision and reliability.

Final Thoughts

The Fascia Iliaca Plane Block is an excellent technique for pain control in hip and femoral fractures, making it a valuable skill for emergency physicians, anesthesiologists, and pain management specialists. With ultrasound guidance, this block can be performed with high accuracy and safety, leading to improved patient outcomes.

Learn More at Gulfcoast Ultrasound Institute!

Looking to enhance your ultrasound-guided nerve block skills? Gulfcoast Ultrasound Institute provides expert led courses designed to help you master the latest techniques in regional anesthesia and more. Visit us at 111 2nd Ave NE, #800, St. Petersburg, FL 33701, or call 727-363-4500 to explore our comprehensive ultrasound training programs!

Start enhancing your ultrasound expertise with Gulfcoast Ultrasound Institute today!




 

About the Author

Allyson Hansen DO

40 YEARS

Serving the Medical Community

200,000+

Participants Trained

500,000+

CME Credits Awarded

6,000+

Courses Offered

CONFIDENCE, COMPETENCE, PROVEN RESULTS

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