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  Indian J Med Microbiol
 

Figure 1: Black rectangle illustrates the probe positioning in the longitudinal oblique plane over the left posterior superior iliac spine. Black dotted line indicates the anatomical site of the erector spinae muscle. Red area shows the attachment site of the erector spinae aponeurosis and the green area shows the attachment site of the deep tendon of the erector spinae muscle. (a) Corresponding ultrasound image shows the thoracolumbar fascia (white dotted line), the erector spinae aponeurosis and its enthesis (single asterisk), the erector spinae muscle and its deep enthesis (double asterisks), the multifidus muscle (M) and the needle's direction in a craniocaudal direction (red arrow) (b).Schematic drawings show the lateral bending test eliciting pain over the opposite posterior medial iliac crest and the irradiation along the cranial portion of the erector spinae muscle (c); the footprint of the erector spinae aponeurosis (red line) and the footprint of the deep tendon of the erector spinae muscle (green line) over the posterior superior iliac spine (d).f = Fat tissue; f-ESA = Footprint of the erector spinae aponeurosis; f-dpESM = Footprint of the deep tendon of the erector spinae muscle

Figure 1: Black rectangle illustrates the probe positioning in the longitudinal oblique plane over the left posterior superior iliac spine. Black dotted line indicates the anatomical site of the erector spinae muscle. Red area shows the attachment site of the erector spinae aponeurosis and the green area shows the attachment site of the deep tendon of the erector spinae muscle. (a) Corresponding ultrasound image shows the thoracolumbar fascia (white dotted line), the erector spinae aponeurosis and its enthesis (single asterisk), the erector spinae muscle and its deep enthesis (double asterisks), the multifidus muscle (M) and the needle's direction in a craniocaudal direction (red arrow) (b).Schematic drawings show the lateral bending test eliciting pain over the opposite posterior medial iliac crest and the irradiation along the cranial portion of the erector spinae muscle (c); the footprint of the erector spinae aponeurosis (red line) and the footprint of the deep tendon of the erector spinae muscle (green line) over the posterior superior iliac spine (d).f = Fat tissue; f-ESA = Footprint of the erector spinae aponeurosis; f-dpESM = Footprint of the deep tendon of the erector spinae muscle