Objective: to evaluate the eectiveness of selective nerve root block (SNRB) versus pulsed radiofrequency treatment to dorsal root

ganglion (PRFT) for treatment of chronic back pain (CBP) with radiculopathy and the correlation between CBP and serum cholesterol

level.

Keywords: Chronic Low Back pain; Radiculopathypulsed radiofrequency; Selective nerve root block

Design: Prospective, randomized, open label study.

Setting: Department of Anaesthesia, ICU, and Pain management, Pain unit, Assiut University.

Patient(s): 80 patients having chronic back pain with radiculopathy were recruited in the study.

Intervention(s): patients in the rst group (40 cases in total) were treated by SNRB via transforaminal approach on the aected nerve

root and patients in the second group (40 patients in total) were treated by PRFT to the aected DRG. Lumbosacral radicular pain (LRP) is a common symptom, its annual prevalence in the general population is reported to be from 9.9% to 25% [1] and it is characterized by a shooting, radiating pain to one or more dermatomes, which is oen caused

by irritation of the corresponding nerve root [2]. e initial treatment should be conservative with oral medications, exercise,

and physiotherapy. When conservative treatments fail, epidural steroid injections and other interventional treatments should be

considered [3]. Surgical interventions are indicated when all other treatments have failed.