“…If the pain is not alleviated by conservative treatment consisting of life-style modification, analgesic use, and physical therapy, epidural administration of anesthetics with or without steroids may be used. The success rate of CEI has been reported to range from 14% to 92%, depending on the diagnosis, technique used, and outcome measure considered [ 24 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 ]; Slipman et al reported a low success rate of 14–20% when CEI was administered to manage trauma-related cervicobrachialgia. However, this indication is rarely used currently, and the follow-up period in Slipman’s study was more than 20 months after CEI [ 35 , 36 ].…”