When Epidural Injections Don't Work: What Comes Next?
Back pain that radiates into the buttock or leg can be difficult to manage, particularly when a herniated disc, spinal stenosis, or irritation of a spinal nerve is involved. When conservative treatments have not provided sufficient relief, physicians may recommend an epidural steroid injection or a more targeted transforaminal injection.
For some patients, these procedures provide meaningful relief. For others, the improvement is incomplete or temporary. When symptoms return, the next question is often: What options remain if injections haven't worked—and does surgery have to be the next step?
Surgery is sometimes necessary and appropriate. However, it is not the only option worth discussing in every case. Depending on the underlying condition, imaging findings, symptoms, and medical history, non-surgical spinal decompression may be another approach to evaluate.
At Triangle Spinal Decompression in Cary, NC, we help patients determine whether they may be appropriate candidates for computerized spinal decompression using the Chattanooga Triton DTS system.
When epidural injections don't work as hoped, or provide only temporary relief, the next step should be to reassess the underlying condition and determine which treatment options may be appropriate.
What Are Epidural and Transforaminal Injections?
Epidural steroid injections are procedures in which a physician delivers corticosteroid medication into the epidural space surrounding the spinal nerves. The goal is to reduce inflammation and irritation that may contribute to pain, particularly when a nerve root is involved.
These injections are commonly considered for patients experiencing symptoms associated with:
Lumbar or cervical disc herniation
Nerve-root irritation or radiculopathy
Certain cases of spinal stenosis
Radiating pain, numbness, or tingling associated with an irritated nerve
The medication is intended to reduce inflammation. It does not physically remove a herniated disc, reverse degenerative changes, or permanently correct the structural conditions that may be contributing to nerve irritation.
Interlaminar Epidural Injections
An interlaminar injection uses a needle placed between the vertebral bones (laminae) to reach the epidural space. Medication can spread within that space and may reach multiple nearby nerve structures.
This approach may be considered when symptoms or imaging findings suggest inflammation affecting a broader area.
Transforaminal Epidural Injections
A transforaminal injection uses a more targeted approach. The physician guides the needle toward the opening through which a particular spinal nerve exits the spinal canal, known as the neural foramen.
Medication is delivered near the selected nerve root, with the goal of addressing inflammation in that region.
The choice between an interlaminar and transforaminal approach depends on the patient's symptoms, examination, imaging, anatomy, and the treating physician's judgment. A more targeted injection is not automatically more effective for every patient.
Why Do Physicians Recommend These Injections?
Epidural steroid injections are generally intended to reduce inflammation around irritated spinal nerves and provide a period of symptom relief.
For someone experiencing significant radiating pain, this relief may make it easier to sleep, walk, participate in rehabilitation, and resume everyday activities.
An injection may also help a patient participate more effectively in a broader treatment plan while symptoms are being managed.
It is important, however, to understand what the procedure is designed to accomplish. An injection primarily addresses inflammation and pain. It does not necessarily change the underlying mechanical or structural condition responsible for the symptoms.
That distinction becomes important when relief is short-lived or symptoms continue to return.
How Effective Are Epidural Injections? What Does the Research Show?
Epidural injections can help some patients, but their effectiveness depends on the diagnosis and the outcome being measured.
A 2025 systematic review from the American Academy of Neurology (AAN), which evaluated 90 randomized controlled trials, examined the effectiveness of epidural steroid injections for cervical and lumbar radiculopathy and spinal stenosis.
For cervical and lumbar radiculopathy, the review found that epidural steroid injections probably reduce short-term pain and disability. The estimated absolute differences corresponded to numbers needed to treat (NNT) of approximately 4 for short-term pain and 6 for short-term disability.
These figures represent pooled research estimates, not a guarantee of benefit for an individual patient.
The findings were less conclusive regarding lasting relief:
Long-term pain relief: Evidence was insufficient to determine whether injections provide meaningful long-term pain reduction for radiculopathy.
Long-term disability: Injections may provide some benefit, but the evidence was uncertain.
Lumbar spinal stenosis: The review found no clear short-term pain benefit, although there may be some improvement in disability for certain patients.
Cervical spinal stenosis: Evidence was insufficient to establish effectiveness.
One important qualification: although this review was published in 2025, its literature search included randomized controlled trials published through January 2021. Its conclusions should be understood in that context.
The practical takeaway is that epidural injections can be a useful treatment option, particularly for short-term symptom relief in some patients with radiculopathy. However, the evidence does not establish that they reliably provide lasting pain relief or resolve the underlying structural problem.
Risks and Limitations of Epidural Injections
Epidural steroid injections are commonly performed, but they are still invasive procedures and have potential risks.
More common or generally less serious effects can include:
Temporary soreness or discomfort at the injection site
Temporary increase in pain
Headache
Facial flushing or temporary changes in blood sugar
Temporary numbness or weakness
Less common but more serious complications can include infection, bleeding, nerve injury, and complications related to the medication or injection procedure.
The U.S. Food and Drug Administration (FDA) has also warned of rare but serious neurological events reported after epidural corticosteroid injections, including spinal cord infarction, paralysis, stroke, and death.
The FDA has not approved corticosteroids for epidural administration. This means that the use of these medications in this manner is off-label, and their safety and effectiveness for epidural use have not been established through FDA approval.
These serious events are rare, but patients should understand the potential risks and discuss the benefits and alternatives with their treating physician.
What to Consider When Epidural Injections Don't Work
When an injection provides only temporary relief, it does not necessarily mean that the procedure was inappropriate or that nothing else can help.
It may mean that reducing inflammation was not sufficient to address all the factors contributing to the patient's symptoms.
Understanding what an MRI reveals—and what those findings actually mean for your symptoms—is an important part of determining the appropriate next step. Read our article, MRI Findings vs. Symptoms: What Your Report Really Means
For example, a patient may have a disc herniation, degenerative disc changes, or narrowing around a nerve root. Inflammation may be part of the problem, but mechanical loading and the condition of the surrounding spinal structures may also contribute.
This is one reason why a treatment that focuses primarily on inflammation may not provide lasting improvement for every patient.
If symptoms return, the next step should be a reassessment of the diagnosis, not simply an assumption that another injection or surgery is automatically necessary.
Depending on the circumstances, a physician may discuss additional conservative care, another injection, a surgical consultation, or other treatment approaches.
For selected patients, non-surgical spinal decompression may also be worth evaluating.
Could Non-Surgical Spinal Decompression Be an Option?
Spinal decompression is a non-surgical treatment approach that uses controlled mechanical forces to apply traction to the spine.
At Triangle Spinal Decompression, we use the Chattanooga Triton DTS computerized spinal decompression system. Treatment parameters are individualized according to the patient's condition and clinical assessment.
The objective is to apply controlled forces to the affected spinal region in an effort to reduce compressive loading and improve the mechanical environment around the involved spinal structures.
This approach is different from an epidural injection:
Epidural steroid injection | Computerized spinal decompression |
Delivers medication into the epidural space | Applies controlled mechanical forces to the spine |
Primarily intended to reduce inflammation | Intended to address mechanical loading |
An invasive injection procedure | A non-surgical, non-injection treatment |
Relief may be temporary | Treatment response varies by patient |
Neither approach is appropriate for everyone, and they should not be considered interchangeable treatments.
Research on mechanical traction and related conservative approaches has reported potential improvements in some patients with low back pain and radiculopathy. However, the quality and consistency of the evidence vary, and studies of general mechanical traction do not establish the effectiveness of every computerized decompression system or treatment protocol.
For that reason, we do not promise that decompression will eliminate a herniation, reverse degeneration, or prevent the need for surgery. The important question is whether a particular patient has a condition and clinical presentation for which a carefully supervised decompression program may be appropriate.
Learn more about our computerized spinal decompression treatment in Cary, NC.
What Does Spinal Decompression Treatment Involve?
Treatment begins with an evaluation rather than simply placing a patient on a decompression table.
The evaluation considers the patient's symptoms, medical history, prior treatments, examination findings, and available imaging. MRI findings can be especially useful when evaluating disc herniations, degenerative changes, and possible nerve-root involvement.
If the patient appears to be an appropriate candidate, treatment is performed using the Chattanooga Triton DTS system.
During treatment, the patient is positioned on the table, and the system applies controlled traction according to individualized settings. The treatment is designed to be controlled and monitored rather than relying on an uncontrolled pulling force.
Patients may experience a gentle pulling or stretching sensation. The treatment should not be approached as a matter of simply using more force. Parameters are selected and adjusted according to the patient's presentation and tolerance.
The number of sessions, treatment frequency, and overall plan depend on the individual. There is no single schedule that is appropriate for every diagnosis or patient.
Our goal is to determine whether the treatment is appropriate, monitor the patient's response, and make clinical decisions based on that response.
Who May Be a Candidate—and Who Needs Additional Screening?
Spinal decompression is not appropriate for every person with back pain, a disc herniation, or spinal stenosis.
Determining candidacy requires more than looking at an MRI report. Learn what to expect during a spinal decompression evaluation, from symptoms and imaging to candidacy
Potential candidates may include selected patients with:
Lumbar or cervical disc herniation
Disc-related radiating pain
Certain forms of degenerative disc disease
Selected cases of spinal narrowing or nerve-root irritation
Persistent symptoms despite appropriate conservative treatment
However, a diagnosis alone does not establish candidacy.
A careful evaluation is especially important for patients with a history of spinal surgery, spinal fusion or implanted hardware, significant osteoporosis, suspected fracture, pregnancy, aneurysm, or other significant medical conditions.
These factors do not all carry the same implications, and some may require additional medical clearance or make treatment inappropriate. The patient's history, affected spinal region, imaging, and the manufacturer's treatment guidance must all be considered.
Patients with progressive neurological weakness, new loss of bowel or bladder control, or numbness in the saddle region require prompt medical evaluation rather than routine decompression treatment. These symptoms can indicate a serious neurological problem.
Our approach is to evaluate first and determine whether decompression is a reasonable option—not to recommend it automatically.
Is Surgery the Only Option After Injections Fail?
No. But surgery may be the appropriate next step for some patients.
When injections and other conservative treatments have not provided adequate relief, a surgical consultation may be appropriate, particularly when symptoms are severe, neurological deficits are progressing, or imaging and examination findings indicate a condition that requires surgical treatment.
However, not every patient with a disc herniation, degenerative disc disease, or spinal stenosis requires surgery.
For patients who do not have an urgent surgical indication, it may be reasonable to explore whether another conservative treatment approach is appropriate before making a surgical decision.
The choice depends on the diagnosis, severity of symptoms, neurological findings, imaging, prior treatment response, and the patient's overall health.
At Triangle Spinal Decompression, we provide an evaluation to determine whether computerized spinal decompression may be a reasonable option. If the patient's presentation suggests that decompression is not appropriate, we believe that should be communicated clearly.
The objective is not to avoid surgery at all costs. It is to help patients understand their options and make an informed treatment decision.
Frequently Asked Questions
Can epidural steroid injections permanently fix a herniated disc?
No. Epidural steroid injections are intended to reduce inflammation and associated symptoms. They do not physically remove a herniated disc or reverse degenerative changes.
How long does relief from an epidural injection last?
The duration varies. Some patients experience meaningful relief, while others have only partial or temporary improvement. Research supports short-term benefit for certain conditions more clearly than it supports lasting pain relief.
Can I have spinal decompression after receiving an epidural injection?
Having received an epidural injection does not automatically rule out spinal decompression. However, candidacy depends on the patient's condition, medical history, timing, symptoms, and clinical evaluation. Your treating physician should be informed of all recent procedures.
Is spinal decompression the same as ordinary traction?
No. Computerized spinal decompression systems use controlled treatment parameters and specific protocols. However, research on general mechanical traction should not automatically be interpreted as proof of effectiveness for a particular computerized decompression system.
Does spinal decompression eliminate the need for back surgery?
Not in every case. Some patients may be appropriate candidates for conservative treatment, while others have conditions that require surgical care. Decompression should not delay necessary medical or surgical evaluation.
How do I find out whether I am a candidate?
The first step is a clinical evaluation that considers your symptoms, medical history, examination findings, and available imaging. This helps determine whether spinal decompression is appropriate or whether another course of care should be considered.
Explore Your Options at Triangle Spinal Decompression
If epidural injections have provided only temporary relief—or have not provided the improvement you hoped for—it may be worth exploring whether another treatment approach is appropriate.
At Triangle Spinal Decompression, our specialized spine suite in Cary, NC, focuses on non-surgical spinal decompression using the Chattanooga Triton DTS system.
We evaluate each patient individually, review relevant imaging and treatment history, and determine whether decompression is a reasonable option. We do not assume that every patient is a candidate, and we recognize that some conditions require other forms of medical or surgical care.
Schedule an evaluation to discuss whether spinal decompression may be appropriate for your condition.
Triangle Spinal Decompression
3750 NW Cary Parkway, Suite 105
Cary, NC 27513
Phone: 919-469-8897
Website: TriangleDecompression.com
Medical References
Armon C, et al. Epidural Steroids for Cervical and Lumbar Radicular Pain and Spinal Stenosis: Systematic Review Summary. Neurology. 2025. Read the AAN systematic review.
U.S. Food and Drug Administration. Drug Safety Communication: Rare but Serious Neurologic Problems After Epidural Corticosteroid Injections. FDA safety communication.
This article is for educational purposes and does not replace individualized medical advice, diagnosis, or treatment.
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