What types of XXXX respond to nerve root injection? A retrospective review of six hundred and forty one cases.

@entity1 @entity612 @entity16 @entity179 @entity158 @entity850 @entity890
PURPOSE: Peri-radicular injection is a widely used procedure for treating @entity158 , but it remains unclear what types of lumbar pathologies respond well to this treatment. We aimed to investigate the efficacy of peri-radicular injection for @entity179 and to determine what types of pathologies respond well to this treatment. METHODS: We reviewed the records of 641 consecutive @entity1 who underwent peri-radicular injection for @entity179 with mean follow-up of 23.4 months. The pathologies included @entity890 in 286 @entity1 , @entity612 in 141, degenerative spondylolisthesis in 136, failed back surgery in 24, isthmic spondylolisthesis in 22, @entity179 in 18, and foraminal @entity850 in 14. Outcome measure was whether or not surgery is avoided by using peri-radicular injection. The rate of obviating surgery was determined in each pathology. RESULTS: Peri-radicular injection obviated surgeries in 331 @entity1 (51.7%). There were no complications related to the procedure, including @entity16 , infection, and haematoma. The rate of obviating surgery was 42.0% in disc herniation, 52.9% in degenerative spondylolisthesis, 67.4% in @entity612 , 54.5% in isthmic spondylolisthesis, 57.1% in foraminal @entity850 , 61.1% in @entity179 and 54.1% in failed back surgery. Poor outcomes were observed in @entity890 with @entity612 (17.9% success), @entity890 (33.3%), recurrent disc herniation (18.2%) and failed back surgery with instability (33.3%). CONCLUSIONS: This study demonstrated that 51.7% of @entity1 with @entity179 were successfully treated by peri-radicular injection. Efficacy was limited in cases of @entity890 with @entity612 , @entity890 , recurrent disc herniation and failed back surgery with instability.
