IRCT20111102007984N29 IRCT 2019-02-05 Iran University of Medical Sciences A comparison of the effects of Triamcinolone and magnesium sulfate in caudal neuroplasty A comparison study of the effects of Triamcinolone and magnesium sulfate in caudal neuroplasty in chronic low back pain. 2017-09-23 anticipated 50 Complete https://irct.ir/trial/35500 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: By using the randomize number table, the patients were divided into two equal groups (n=25), Blinding description: Both drugs are injectable and the injection site of both drugs in the patients' body is in the same area. Therefore, patients are not aware of the type of drug. Also, the outcome evaluator is unaware of the random allocation. 3 low back pain. Intervention 1: In intervention group 10 ml Ropivacaine 0.2% ( produced by Molteni, Italy) ,10 cc Nacl 5%(produced by Samen, Iran) ,50 mg Magnesium sulfate (produced by Shahid Ghazi,Iran) and 1500 unit Hyalase(produced by Darupakhsh,Iran )was injected in the caudal epidural space by a Racz catheter (produced by Epimed,USA) under fluoroscopic guidance . Intervention 2: Control group: In control group 10 ml Ropivacaine 0.2% (produced by Molteni, Italy) ,10 cc Nacl 5%(produced by Samen,Iran) ,80 mg Triamcinolone (produced by Caspian, IRAN) and 1500 unit Hyalase(produced by Darupakhsh,Iran )was injected in the caudal epidural space by a Racz catheter (produced by Epimed,USA) under fluoroscopic guidance . Yes - There is a plan to make this available What will be shared: Some part of the clinical information of the patients will be shared When: 6 months after the end of the project To whom: Faculty Members of Medical Sciences Universities Conditions: For further studies Where to obtain: Deputy of Research & Technology Pain Research Center, Iran University of Medical Sciences How to obtain: First, at the request of the university, she/he will be informed at the request of the university's deputy of the research department, and then she/he will be referred to the research center during the administrative process and the data will be received by the committee of the research center of the center with a commitment and acceptance. Comments: