Myofascial trigger points: New insights in ultrasound imaging

Puncture of trigger points in myofascial syndrome can be performed with greater safety for the patient under ultrasound-guided techniques. The identification of potentially hazardous structures in the path of the needle, together with the development and validation of tools like sonoelastography, spontaneous muscle contraction (twitch response), or vascular dynamics, helps us to be more accurate, specially in cases where the trigger points are in deep fasciae or muscular layers. Ultrasound-guided interfascial block, a known regional anesthetic technique, is emerging as a promising approach with minimum traumatic damage to the muscles.