Caudal Epidural Block Versus Ultrasound-Guided Pudendal Nerve Block for Pediatric Circumcision

The linear probe of ultrasound was then rotated 90 degrees and placed longitudinally in the midline to evaluate the sacral cornus, sacrococcygeal ligament and sacral bone. A 22 Gauge 50 mm echogenic block needle was advanced

A 22 Gauge 50 mm insulated needle was then introduced in the anterior-posterior direction at the middle of the ultrasound probe's superior edge with an out-of-plane approach and using an inclination of 15° in the sagittal plane. The needle tip's position was identified by direct visualization using the movement of adjacent anatomical structures.