Society for Pediatric Pain Medicine
Better Care for Children in Pain.

An 8-month-old male with a history of sacral dimple presents for right sided orchiopexy for undescended testicle. On exam, the dimple measures 7mm and the base could not be visualized. A lumbar ultrasound demonstrated decreased spinal cord mobility and thickened filum. A lumbar MRI had been ordered but not completed. The parents request minimal narcotic use and you counsel them on the use of regional anesthesia.

Which of the following blocks would be most appropriate for this patient’s surgery?