Seeing is not believing: fascial plane blocks and the illusion of predictable spread

Key Points

• The illusion of predictable local anesthetic spread is challenged by findings on fascial plane blocks.
• Key evidence includes an analysis that addresses the variability in local anesthetic effectiveness across regions.
• Analysis using ultrasound-guided injection techniques shows the depth of anesthetic distribution can vary significantly.
• Understandings gained from this may enable better practices in anesthetic administration and patient management.