(a) Placing the probe longitudinally between the sacral cornua will capture the dorsal surface of the sacrum, the dorsal aspect of the pelvic surface of the sacrum, and the sacrococcygeal ligament. Angiocatheter penetrated the sacrococcygeal ligament and lies in the epidural space. (b) Local Anesthetic spread through Caudal Angiocatheter in caudal epidural space.
