Measuring the depth to the posterior complex during lumbar neuraxial ultrasound, interspinous view
Measuring the depth to the posterior complex during lumbar neuraxial ultrasound, interspinous view
In the interspinous view, use the caliper function on the ultrasound machine to measure the depth from the skin to the posterior complex (ligamentum flavum, epidural space, and dura). For further detail refer to UpToDate content on neuraxial ultrasound for anesthesia.