Is XXXX with ultrasound-guided puncture useful in treatment of @entity158 of the trapezius muscle?

@entity1 @entity616 @entity158
OBJECTIVES: Ultrasound-guided puncture is indispensable for the injection of local anesthetic in the interfascial space, the space between 2 muscle fasciae. Interfascial infiltration or block may be useful in treating @entity158 in the trapezius muscle. METHODS: (1) In 5 cadavers, we studied the diffusion of a physiological saline and latex solution in the interfascial space of the upper muscles of the back, and performed a histological study of the fasciae. (2) We performed an @entity616 in 25 @entity1 with @entity158 in the trapezius muscle. Depending on the trigger point location, the block was performed between the trapezius and the levator scapulae or between the trapezius and the rhomboideus major. RESULTS: In all cadavers, anatomical dissection showed the latex in the interfascial space. The histological study confirmed the presence of nerve structures in the fasciae and in the interfascial space itself. @entity158 was assessed in all @entity1 on a visual analog scale (VAS) before and after the injection (at rest and in motion). Preinjection: mean VAS 6.4 (at rest) and 7.6 (in motion). Postinjection: mean VAS 1 (at rest) and 1.6 (in motion). DISCUSSION: The anatomical, histological, and ultrasound findings in the cadaver study confirmed the diffusion of the solution in the interfascial space. Study in @entity1 confirms that the @entity616 in the back musculature can be as effective as in the abdominal musculature. The presence of nerve structures in this space, confirmed by the histological study, seems to explain the @entity158 relief reported by the @entity1 with this interfascial technique.
