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Quadratus lumborum block
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Tag Hesham Elsharkawy
Quadratus Lumborum Blocks
Clinical Anatomy/Sonoanatomy The quadratus lumborum (QL) is a posterior abdominal wall muscle that lies dorsolateral to the psoas major (PM) muscle. The QL muscle originates from the inner lip of the medial half of the iliac crest and inserts into…