What Happens If Back Injections Don’t Work?

Roughly half of all patients who receive epidural steroid injections for back pain do not get meaningful, lasting relief. In one prospective study tracking patients over three weeks, about 53 percent never reached a sustained 50 percent reduction in pain. That does not mean you are out of options. When injections fall short, a structured set of next steps exists, ranging from better diagnostic testing and nerve-targeted procedures to implantable devices and, in select cases, surgery. The path forward depends heavily on why the injection did not work in the first place.

How Often Do Back Injections Actually Fail?

The word “fail” gets used loosely, so it helps to define it. Pain specialists typically count an injection as successful if it reduces your pain by at least half for a clinically meaningful period. By that standard, non-response is common. In a study that followed 108 patients after epidural steroid injections, only about 47 percent achieved that 50 percent threshold by the three-week mark. Of the 57 who did not, more than half never hit the target at any point. A smaller group did experience initial relief on the first day but lost it within a few days to two weeks.¹

This matters because many patients expect injections to be a definitive fix. In reality, even a “successful” injection is often a temporary bridge, buying weeks or months of reduced pain while you work on rehabilitation. When even that bridge does not materialize, the conversation shifts from “did it work?” to “why didn’t it, and what do we try next?”

Why Injections Miss the Mark

An epidural steroid injection delivers anti-inflammatory medication near the spinal cord and nerve roots. If the actual source of your pain is not inflammation at that specific location, the injection has no real target. Several scenarios explain why this happens.

The most straightforward reason is a wrong or incomplete diagnosis. Back pain can come from discs, facet joints, sacroiliac joints, muscles, ligaments, or nerves themselves. An injection aimed at a lumbar disc herniation will not help if most of your pain is actually generated by an arthritic facet joint a few centimeters away. Imaging like MRI can show structural abnormalities, but those abnormalities do not always line up with where the pain is coming from. Plenty of people with dramatic disc bulges on MRI have no pain, and plenty of people with agonizing pain have unremarkable scans.

Another reason is that the pain has shifted from a local, tissue-based problem to something driven by the nervous system itself. In chronic low back pain, the central nervous system can become hypersensitive, amplifying pain signals even after the original injury has healed or stabilized. This phenomenon has been recognized as a possible mechanism in a subset of chronic low back pain patients, and it helps explain why a locally targeted injection sometimes does nothing: the problem has migrated upstream, into how the brain and spinal cord process signals, not in the tissue the injection is reaching.

Finally, some people simply do not respond well to corticosteroids. Individual variation in steroid metabolism, the severity of inflammation, and even the precision of needle placement all influence outcomes. A technically imperfect injection that lands a few millimeters off-target can mean the difference between relief and disappointment.

Narrowing Down the Real Pain Source

When a standard epidural injection fails, the most productive next step is often not another round of the same injection but rather a more targeted diagnostic workup. Selective nerve blocks, which use a small amount of local anesthetic injected near a single spinal nerve, can help identify exactly which nerve is transmitting the pain signal.² If numbing one specific nerve temporarily eliminates your pain, that is strong evidence about the pain’s origin and can guide the next treatment.

For facet joint pain specifically, medial branch blocks serve a similar diagnostic role. Small nerves called medial branches carry pain signals from the facet joints. Blocking them with anesthetic tells the physician whether those joints are the real culprit. This diagnostic step becomes especially important if the next treatment under consideration is radiofrequency ablation, where getting the diagnosis right up front dramatically improves outcomes.

Radiofrequency Ablation

When steroid injections for facet joint pain do not work, radiofrequency ablation is a well-established next step. The procedure uses heat generated by radio waves to disable the small nerves that carry pain from the facet joint, essentially interrupting the pain signal at the source.³ The effect is not permanent, since nerves can regenerate over months to years, but many patients get six months to two years of meaningful relief per treatment.

The catch is patient selection. A randomized controlled trial found that patients who had a positive response to a diagnostic nerve block beforehand had roughly seven times the odds of a good outcome from radiofrequency ablation compared to those with a negative block.⁴ International consensus guidelines echo this, noting that medial branch blocks are more predictive than injections directly into the facet joint itself, and that stricter selection criteria improve results at the cost of ruling out some patients who might have benefited.⁵

If your pain specialist suggests radiofrequency ablation, expect to go through at least one, and sometimes two, rounds of diagnostic nerve blocks first. That extra testing is not busywork; it is the single strongest predictor of whether the ablation will help you.

Spinal Cord Stimulation

For people whose back pain has not responded to injections, medications, physical therapy, or even surgery, spinal cord stimulation is one of the options with the strongest evidence base. A small device implanted under the skin delivers mild electrical pulses to the spinal cord, modifying pain signals before they reach the brain. A recent meta-analysis comparing spinal cord stimulation to conventional medical management for chronic nonsurgical back pain found significant improvements in pain intensity, physical function, and quality of life at six months, with benefits maintained in longer-term follow-up data out to two years.⁶

An umbrella review of treatments for failed back surgery syndrome, which pools findings from multiple systematic reviews, concluded that neurostimulation has the most robust evidence of effectiveness among the available therapies for refractory back and neuropathic pain.⁷ Most patients undergo a trial period, typically a week or so, where a temporary lead is placed and you test the stimulation before committing to a permanent implant. Not everyone responds, but the trial period protects against a wasted surgery.

Intrathecal Drug Delivery

When oral pain medications at tolerable doses are not cutting it, an implanted intrathecal pump can deliver medication directly into the fluid surrounding the spinal cord. Because the drug reaches the pain pathways without traveling through the whole body, much smaller doses are needed, which can reduce side effects like sedation and constipation. One long-term study of patients with chronic back pain tracked intrathecal drug delivery over six years and found that the required dose of the opioid used stabilized after about two years and remained steady afterward.⁸

Pump placement itself has evolved. Recent evidence suggests that placing intrathecal pumps in the lower back, rather than the traditional abdominal position, may be associated with better pain relief, shorter surgery, and fewer complications.⁹ Intrathecal therapy is generally reserved for patients who have exhausted other options. It requires periodic pump refills and long-term follow-up, so it is a commitment, not a quick fix.

When Surgery Comes Up

A common fear is that failed injections automatically mean surgery is next. The reality is more nuanced. In many cases, surgery is an option that runs parallel to injection therapy rather than after it, and some data suggest that getting injections may actually reduce the likelihood of choosing surgery. A subgroup analysis from the large SPORT trial found that among patients with lumbar disc herniation, only 19 percent of those who received epidural steroid injections eventually went on to surgery, compared to 56 percent of those who did not receive injections. A much larger share of the injection group switched from the surgical track to the nonsurgical track during the study. Interestingly, both groups had similar outcomes at four years.¹⁰

Surgery is most clearly indicated when there is a structural problem that can be mechanically corrected: a large disc herniation compressing a nerve, spinal stenosis narrowing the canal, or instability between vertebrae. If your injections failed but your imaging does not show a surgically correctable lesion, a surgeon is unlikely to recommend an operation, and that is a good thing. Surgery on a spine that does not have a clear surgical target tends to have disappointing results.

The Risks of Repeating Injections That Are Not Working

Some patients and physicians default to repeating the same injection, hoping the next one will take. There are practical limits to this approach. A retrospective study of 250 patients who received repeated epidural steroid injections found that about 19 percent experienced at least one adverse event. Most were mild and self-limiting, things like temporary headache or injection-site soreness. More serious complications, including infection and transient neurological problems, occurred in about 3 percent of patients, and those complications were concentrated among people who had received more than three injections.¹¹

Repeated corticosteroid injections also carry systemic concerns. Steroids can raise blood sugar, suppress the adrenal glands, and weaken nearby bone and soft tissue over time. Most pain specialists limit patients to three or four injections per year for a given area, and many will stop sooner if the first one or two clearly did not help. Continuing to inject a site that is not responding is not just unlikely to work; it adds risk without benefit.

Platelet-Rich Plasma and Regenerative Approaches

You may hear about platelet-rich plasma, or PRP, as an alternative when steroid injections fail. PRP is made from your own blood: a sample is drawn, spun in a centrifuge to concentrate the platelets and their growth factors, and then injected into the painful area. The idea is to promote tissue repair rather than just reduce inflammation. One clinical trial injecting PRP directly into damaged lumbar discs reported that 71 percent of patients were classified as treatment successes over a 48-week follow-up, with improvements in both pain and function.¹²

The evidence, though, remains thin. A comprehensive review noted that only a small number of studies have examined PRP for low back pain, and while early results are encouraging for degenerative disc disease and possibly facet joint pain, the quality of evidence is still low. PRP for sacroiliac joint pain, for instance, lacks support outside of small trials and case reports.¹³ Insurance rarely covers PRP for spinal conditions, so you are likely paying out of pocket, and the science is not yet mature enough to promise consistent results.

The Multidisciplinary Approach

One of the clearest findings in chronic back pain research is that no single treatment works as well in isolation as a combination of approaches does. For patients with persistent pain after failed treatments, whether injections, surgery, or both, the most effective strategy involves exercise or physical therapy, psychological counseling, medication management, and interventional procedures used together.¹⁴

The psychological piece often surprises people. Chronic pain changes how the brain processes signals, and anxiety, depression, and catastrophizing can amplify the experience of pain in measurable, physiological ways. Cognitive behavioral therapy has been studied as part of evidence-based management for chronic low back pain and is increasingly included in multidisciplinary pain programs.¹⁵ This is not about the pain being “in your head.” It is about the brain being part of the pain system, and treating the whole system rather than just one spot in your spine.

That said, expectations should be realistic. A study comparing different treatment approaches for patients after failed back surgery found that even with treatment, measures of depression, disability, and pain generally stayed in the moderate range, with limited evidence of dramatic functional improvement across any single group.¹⁶ The goal is often meaningful improvement in function and quality of life rather than elimination of pain.

The Evolving Language of Persistent Spinal Pain

If you spend time in pain clinics, you may encounter the term “failed back surgery syndrome,” or FBSS. It is an unfortunately named condition that does not necessarily mean your surgery was done poorly. It simply describes persistent or recurrent spinal pain after one or more procedures. In recent years, specialists have moved toward a new term: persistent spinal pain syndrome, or PSPS. This rename is not just cosmetic. The older label implied that surgery caused the problem and that only surgical patients qualified. The newer framework recognizes that chronic spinal pain can persist or recur regardless of whether surgery was ever performed, and it can involve the cervical spine, thoracic spine, or lumbosacral region.¹⁷

The PSPS framework also encourages physicians to classify the underlying pain mechanism more precisely, factoring in whether the pain is driven by tissue damage, nerve injury, central nervous system changes, or some combination. A recently proposed diagnostic scale aims to categorize patients by pain mechanism and anatomical generator to guide treatment decisions more systematically.¹⁸ For patients, the practical implication is this: if your doctor is using this kind of mechanistic approach, they are less likely to keep throwing the same treatment at you and more likely to match the intervention to the specific type of pain you have.

The Financial Reality

Cost is an unavoidable part of the conversation when injections fail and treatment escalates. Managing chronic back pain that has not responded to initial treatments is expensive. An analysis of over 122,000 patients with failed back surgery syndrome found that annual costs varied significantly by insurance type, with Medicare patients generally incurring the highest median annual costs. For patients who received spinal cord stimulators, those with commercial insurance had the lowest median annual costs afterward.¹⁹

Insurance coverage for advanced pain treatments varies enormously. Spinal cord stimulators usually require prior authorization and documented failure of conservative treatments. Intrathecal pumps have similar hurdles. PRP injections for back pain are rarely covered at all. Before committing to an escalated treatment plan, it is worth having a direct conversation with your insurance provider about what is covered and what documentation you will need from your physician. Some pain clinics have staff specifically trained to navigate these authorizations.

What to Bring Up at Your Next Appointment

Research on patient recovery after hospital treatment for back pain found that managing expectations, and providing multidisciplinary support during the transition from clinical care back to daily life, may help guide better outcomes.²⁰ If your injections have not worked, the most useful questions to ask your doctor are not “can we try another injection?” but rather: “Do we know exactly where my pain is coming from? Would a diagnostic nerve block help clarify that? And given what we know now, which of the available next steps has the best evidence for someone in my specific situation?” The answers will vary by person, but asking the right questions is often what separates patients who drift through repeated failed treatments from those who find a path to meaningful improvement.