2.4. Exclusion criteria
pain, 9–points, infection, motor weakness, NRS
INFECTION
Patient refusalAge <20 yearsUnbearable pain >9–points on NRS, pain <4–points on NRSAcute pain of onset lasting <12 weeksSigns of progressive motor weakness or neurologic deficitsAllergies to steroids or contrast dyesCoagulopathyEpidural steroid injection within the previous 4 weeksSystemic infection, injection site infectionMalignancy