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. 2023 Apr 12;37(4):503–510. doi: 10.1007/s00540-023-03192-6

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© The Author(s) 2023

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — Images of ultrasound-guided pericapsular nerve group (PENG) block. The figure on the left shows the ultrasonic anatomy of PENG block; the needle tip was positioned between the psoas tendon and the pubic ramus using an in-plane approach. The figure on the right shows the local anesthetic spread following injection. Asterisk, target for local anesthetic injection; arrow, needle pathway; area circled by dashed line, local anesthetic spread; AIIS, anterior inferior iliac spine; IPE, iliopubic eminence; PT, psoas tendon; FA, femoral artery