【Pain Hydrodissection series: Superior Cluneal Nerve "De-sandwiching"】

Our inclusion criteria for entrapped superior cluneal nerve: 1. positive Tinel sign at iliac crest overlying the fibro-osseous tunnel 2. positive scratch-collapse test (SCT) upon scratching over the superior part of buttock 3. no signs of radicular-type of pain It's just a clinical hypothesis, which mandates more objective measurements to conform or rule out the effectiveness of this "de-sandwiching" approach. Extended reading: *Is it possible to exactly visualize the superior cluneal nerve using ultrasound imaging? Reg Anesth Pain Med. 2019 Aug 30:rapm-2019-100731 https://pubmed.ncbi.nlm.nih.gov/31473... Ultrasonographic Technique for Imaging and Injecting the Superior Cluneal Nerve Am J Phys Med Rehabil. 2017 Jun;96(6):e117-e118. https://pubmed.ncbi.nlm.nih.gov/27755... Ultrasound Imaging for the Medial Branches of the Superior Cluneal Nerve: Optimal Visibility at the "Fatty Tunnel" Pain Pract. 2020 Mar;20(3):338-339. https://pubmed.ncbi.nlm.nih.gov/31677... A simple and novel ultrasound-guided approach for superior cluneal nerves block Anaesth Crit Care Pain Med. 2021 Apr;40(2):100838. https://pubmed.ncbi.nlm.nih.gov/33757...