Background: Despite advancements in anaesthesiology and regional anaesthesia, the threedimensional spread of local anaesthetics is still poorly understood. This study investigates the pericapsular spread of radiopaque contrast after ultrasound-guided genicular nerve block in cadaveric knees using CT reconstruction. The aim is to assess the reproducibility, accuracy, and variability of this technique in order to improve safety and effectiveness. Methods: We used a four-stage methodology that involved performing genicular nerve block on cadaveric knees, acquiring data using high-resolution ultrasound and helical CT imaging, performing segmentation and surface reconstruction of the CT images, and analysing the data quantitively to determine the spread of the infiltrate in each genicular nerve region. Coefficients of variation were calculated to estimate the spread and reproducibility of each genicular nerve block. Results: Our results revealed significant variability in spread in all genicular nerve blocks, particularly around the recurrent genicular nerve. Despite this variability, the spread--particularly along the medial-lateral and anterior-posterior axes--showed moderate consistency. Furthermore, the regions covered by 80% of the spread closely matched the pericapsular distribution of the genicular nerves of the knee. Conclusions: Notable variability in spread was observed in genicular nerve blocks, particularly around the recurrent genicular nerve. However, the spread showed moderate consistency and aligns closely with the pericapsular nerve distribution of the knee. Future studies should combine quantitative analysis with anatomical dissection to further investigate the involvement of the deep peroneal motor branch. (c) 2024 Sociedad Espanola de Anestesiolog & imath;a, Reanimacion y Terapeutica del Dolor. Published by Elsevier Espana, S.L.U. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
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Univ Ulsan Coll Med, Asan Med Ctr, Dept Anesthesiol & Pain Med, Seoul, South KoreaUniv Ulsan Coll Med, Asan Med Ctr, Dept Anesthesiol & Pain Med, Seoul, South Korea
Choi, Woo-Jong
Hwang, Seung-Jun
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Univ Ulsan Coll Med, Asan Med Ctr, Dept Anat & Cell Biol, Seoul, South KoreaUniv Ulsan Coll Med, Asan Med Ctr, Dept Anesthesiol & Pain Med, Seoul, South Korea
Hwang, Seung-Jun
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Song, Jun-Gol
Leem, Jeong-Gil
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Univ Ulsan Coll Med, Asan Med Ctr, Dept Anesthesiol & Pain Med, Seoul, South KoreaUniv Ulsan Coll Med, Asan Med Ctr, Dept Anesthesiol & Pain Med, Seoul, South Korea
Leem, Jeong-Gil
Kang, Yong-Up
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Chung Sol Pain Clin, Pusan, South KoreaUniv Ulsan Coll Med, Asan Med Ctr, Dept Anesthesiol & Pain Med, Seoul, South Korea
Kang, Yong-Up
Park, Pyong-Hwan
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Univ Ulsan Coll Med, Asan Med Ctr, Dept Anesthesiol & Pain Med, Seoul, South KoreaUniv Ulsan Coll Med, Asan Med Ctr, Dept Anesthesiol & Pain Med, Seoul, South Korea
Park, Pyong-Hwan
Shin, Jin-Woo
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Univ Ulsan Coll Med, Asan Med Ctr, Dept Anesthesiol & Pain Med, Seoul, South KoreaUniv Ulsan Coll Med, Asan Med Ctr, Dept Anesthesiol & Pain Med, Seoul, South Korea
机构:
Univ Ulsan Coll Med, Asan Med Ctr, Dept Anesthesiol & Pain Med, Seoul, South KoreaUniv Ulsan Coll Med, Asan Med Ctr, Dept Anesthesiol & Pain Med, Seoul, South Korea
Choi, Woo-Jong
Hwang, Seung-Jun
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Univ Ulsan Coll Med, Asan Med Ctr, Dept Anat & Cell Biol, Seoul, South KoreaUniv Ulsan Coll Med, Asan Med Ctr, Dept Anesthesiol & Pain Med, Seoul, South Korea
Hwang, Seung-Jun
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Song, Jun-Gol
Leem, Jeong-Gil
论文数: 0引用数: 0
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Univ Ulsan Coll Med, Asan Med Ctr, Dept Anesthesiol & Pain Med, Seoul, South KoreaUniv Ulsan Coll Med, Asan Med Ctr, Dept Anesthesiol & Pain Med, Seoul, South Korea
Leem, Jeong-Gil
Kang, Yong-Up
论文数: 0引用数: 0
h-index: 0
机构:
Chung Sol Pain Clin, Pusan, South KoreaUniv Ulsan Coll Med, Asan Med Ctr, Dept Anesthesiol & Pain Med, Seoul, South Korea
Kang, Yong-Up
Park, Pyong-Hwan
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h-index: 0
机构:
Univ Ulsan Coll Med, Asan Med Ctr, Dept Anesthesiol & Pain Med, Seoul, South KoreaUniv Ulsan Coll Med, Asan Med Ctr, Dept Anesthesiol & Pain Med, Seoul, South Korea
Park, Pyong-Hwan
Shin, Jin-Woo
论文数: 0引用数: 0
h-index: 0
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Univ Ulsan Coll Med, Asan Med Ctr, Dept Anesthesiol & Pain Med, Seoul, South KoreaUniv Ulsan Coll Med, Asan Med Ctr, Dept Anesthesiol & Pain Med, Seoul, South Korea