Ultrasound guided chronic pain interventions (Part I).

Recently, ultrasonography (US) is an indispensible imaging technique in regional anesthesia practice. With the guidance of US, various invasive interventions in chronic pain pathologies of the musculoskeletal system, peripheral and neuroaxial pathologies has become possible. The management includes diagnostic blocks as weel as radiofrequency ablation and institution of neurolythic agents. During these algologic interventions we are able to see the target tissue, the dispersion of the drug and all nearby vascular structures. Besides these the US also protects the team from ionic radiation that one encounters when using flouroscopy or computed tomography. Latest publications in this field show that applicability of US in chronic pain syndromes is rapidly expanding with a good future. The additional equipment (echogenic needles, 3-D US etc.) will also expand its applications in algology practice. This review highlights different applications of US in chronic pain conditions.