Epidural steroid injections may help patients with radicular symptoms. Studies have found conflicting results, but the trend is toward a small improvement for up to three months after injection. There is no evidence to support the use of epidural steroid injections in patients without radicular symptoms, and injections are less effective in patients with severe spinal stenosis and those with stenotic lesions encompassing more than three lumbar levels.
An Epidural Steroid Injection is generally successful in relieving pain for approximately 50% of patients. If a patient does not experience any back pain or leg pain relief from the first epidural injection, further injections will probably not be beneficial. However, if there is some improvement in back pain or leg pain, one to two additional Epidural Steroid Injections may be recommended.
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