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Ultrasound image and landmarks of an erector spinae plane block. Ultrasonographic visualisation of the needle positioning prior to the injection of the local anaesthetic in the interfascial plane. The needle tip is contacting the dorsal aspect of the targeted lumbar transverse process.
ES = erector spinae complex; TP = transverse process; IT = intertransversarii lumborum muscles; IFP = interfascial plane
