Incidence of lower-extremity muscle weakness after quadratus lumborum block

Since the original publication on the quadratus lumborum (QL) block in 2013, various approaches for QL block administration have been reported [1,2]. Lower-extremity muscle weakness after a posterior QL block has been reported as a complication [3]. However, there have been no reports of lower-extremity muscle weakness after a QL block using other approaches. We investigated the incidence of lower-extremity muscle weakness after each type of QL block.

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