An exploratory study on the presence of sensory nerves in the caudal part of the trapezius

Intramuscular onabotulinumtoxinA (BTX) injections and nerve decompression surgery both aim to release compressed sensory nerves are used in the treatment of migraine/headaches. Although for many BTX injection sites, their potential entrapment sites have been established, trapezius this information is incomplete. A macro- microscopic cadaveric study was performed which suprascapular part explored presence piercing or penetrating whether these contained fibers. One side six human cadavers were dissected reveal trapezius-associated its part. Schematic overview drawings made either region. Piercing cervical resected microscopically studied For region, correlating supraclavicular detected. In all specimens, plexuslike connections between accessory branches plexus, varying CII-CV, observed innervate at locations that showed overlap with sites. Moreover, fibers as confirmed by immunohistochemical staining marker CGRP. The other might explain why show therapeutic effectivity migraine/headaches