“…Description of epidural/intradiscal injection studies Summary of interventions Sixty-three studies evaluated the use of epidural/intradiscal injection for sciatica 95, (eight studies had more than two treatment arms 146,149,161,163,167,169,183,197 181,[183][184][185]187,193,194,197,200,202 (two studies had more than two treatment arms 183,197 ) compared different modes of administering epidural/intradiscal injections and 20 studies 149,167,[177][178][179][180]182,186,[188][189][190][191][192]195,196,198,199,203,204,207 compared the use of different epidural/intradiscal injections. Details of the interventions are summarised in Table 17b, but the findings of these studies are not considered any further here.…”