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  • Title: A cadaveric study of injectate spread in the psoas compartment with a direct iliopsoas injection suggested for use during surgery.
    Author: Green C, Flannery O, Crotty J, Felle P, Harmon D, Masterson E.
    Journal: Clin Anat; 2011 Sep; 24(6):763-7. PubMed ID: 21412857.
    Abstract:
    Total hip replacement produces significant postoperative pain. Psoas compartment block is the most effective block of the lumbar plexus in terms of pain relief and reduced blood loss. It is a proven regional technique for analgesia and anaesthesia during and after total hip replacement conferring a number of benefits to the patient. However, traditional techniques used to produce this block require increased theatre time and are associated with a number of serious complications. We present a surgeon-delivered technique for producing a lumbar plexus block using direct injection into the iliopsoas muscle when it is visible intraoperatively. This study shows a cadaveric model using methylene blue and radiopaque contrast produces injectate spread in a fashion which would produce a successful lumbar plexus block. This novel technique for lumbar plexus block affords the benefits of psoas compartment block with reduced complications and reduced administration time.
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