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BioMed Research International
Volume 2017, Article ID 2752876, 7 pages
Review Article

Ultrasound-Guided Quadratus Lumborum Block: An Updated Review of Anatomy and Techniques

1Department of Anesthesiology, Showa University Hospital, Tokyo, Japan
2Department of Anesthesiology, Wan Fang Hospital, Taipei Medical University and Department of Anesthesiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan

Correspondence should be addressed to Hironobu Ueshima; pj.oc.oohay@ihmihseu

Received 31 October 2016; Accepted 24 November 2016; Published 3 January 2017

Academic Editor: Eberval G. Figueiredo

Copyright © 2017 Hironobu Ueshima et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Purpose of Review. Since the original publication on the quadratus lumborum (QL) block, the technique has evolved significantly during the last decade. This review highlights recent advances in various approaches for administering the QL block and proposes directions for future research. Recent Findings. The QL block findings continue to become clearer. We now understand that the QL block has several approach methods (anterior, lateral, posterior, and intramuscular) and the spread of local anesthetic varies with each approach. In particular, dye injected using the anterior QL block approach spread to the L1, L2, and L3 nerve roots and within psoas major and QL muscles. Summary. The QL block is an effective analgesic tool for abdominal surgery. However, the best approach is yet to be determined. Therefore, the anesthetic spread of the several QL blocks must be made clear.