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  Indian J Med Microbiol
 

Figure 1: Arrow depicts needle path to anterolateral part of vertebral body. Lower pole of kidney is seen. Location A; Needle tip location when bone is hit and quadriceps contractions are seen externally. Location B; Needle tip location when bone is hit and psoas muscle contractions are seen on ultrasound. Location C; Needle tip location when bone is hit but there is no psoas muscle contraction. Location D; Needle tip position when no bone is hit and there is no psoas muscle contraction visible on ultrasound. VB: vertebral body/IVC: inferior vena cava/ANT: anterior/POST: posterior

Figure 1: Arrow depicts needle path to anterolateral part of vertebral body. Lower pole of kidney is seen. Location A; Needle tip location when bone is hit and quadriceps contractions are seen externally. Location B; Needle tip location when bone is hit and psoas muscle contractions are seen on ultrasound. Location C; Needle tip location when bone is hit but there is no psoas muscle contraction. Location D; Needle tip position when no bone is hit and there is no psoas muscle contraction visible on ultrasound. VB: vertebral body/IVC: inferior vena cava/ANT: anterior/POST: posterior