Boretsky K, et al. - This review was undertaken to report the outcomes of a combined nerve stimulation ultrasound-guided lumbar plexus block using the vertebral body, transverse process, and psoas muscle as landmarks on a transverse lumbar paravertebral sonogram with mid-axillary transducer placement, “shamrock method,” in children and adolescents, focusing on the rate of achieving sensory changes in the lumbar plexus distribution, performance time, reliability of echo-landmarks, measures of patient comfort, and complications. Based on the findings, researchers concluded that practitioners can reach the nerves of the lumbar plexus and achieve sensory block in pediatric patients with a high success rate, via ultrasound guidance using lateral imaging of transverse process, vertebral body, and psoas muscle.