What Is the Role of Interventional Pain Medicine in Treating Lower Back Pain

Low back pain is the leading cause of disability worldwide, affecting an estimated 619 million people at any given time. Most adults will experience it at some point in their lives. While the risk increases with age, the encouraging news is that most acute episodes improve with time and appropriate care. The majority of people achieve meaningful recovery within a few months when they remain active and address contributing factors early.

What happens when back pain first develops?

In the early stages, the muscles around the spine often tighten or spasm. This is a protective response—the body's way of stabilizing the area when it detects inflammation or irritation in deeper structures such as joints, discs, or nerves. Although this reaction is helpful in the short term, prolonged muscle guarding can lead to additional pain and stiffness. During this phase, staying active is important. Prolonged bed rest tends to slow recovery. Gentle movement and continuing usual daily activities as tolerated are helpful.

When back pain becomes chronic

When pain persists for weeks or months, the nervous system can become more sensitive to pain signals. This process, known as central sensitization, causes the brain and spinal cord to amplify pain even after the original injury has started to heal. As a result, activities that were once painless may become uncomfortable, and pain can feel more constant and difficult to manage.

This change may stem from ongoing mechanical stress on spinal structures or from repeated activation of pain pathways in the spinal cord. Addressing pain early—by restoring normal movement and reducing inflammation—helps limit the development of long-term sensitization.

Initial approaches to treatment

For most individuals, the foundation of care is nonpharmacologic. These strategies include:

• Exercise and physical therapy focused on restoring proper movement patterns and strengthening the muscles that support the spine. Programs are most effective when tailored to the individual's needs and goals.
• Psychological approaches, such as cognitive behavioral therapy and mindfulness-based stress reduction, which help change how the brain processes pain and reduce the fear and anxiety that often accompany persistent pain.
• Hands-on therapies, including spinal manipulation, massage, and acupuncture, which may offer additional relief, particularly in the early stages.
• Transcutaneous electrical nerve stimulation (TENS) units, which deliver mild electrical impulses through the skin to help modulate pain signals and can be used at home as part of self-management.

When over-the-counter medications are ineffective, additional non-opioid medication classes may be considered for chronic or neuropathic components of low back pain. These include medications that modulate pain signaling. Topical agents can provide localized relief with limited systemic effects. These medications are used supportively alongside rehabilitation rather than as primary or standalone treatments. Multidisciplinary programs that combine supervised exercise, psychological support, medical management, and interventional options have been shown to be more effective than any single treatment alone.

When to seek specialist evaluation

Most episodes of low back pain improve with conservative care. However, certain red-flag symptoms require prompt medical evaluation, typically by a spine surgeon. These include new or worsening leg weakness, loss of bladder or bowel control, numbness in the groin or inner thighs, unexplained weight loss or fever, and new back pain in a patient with a history of cancer.

In the absence of red flags, if pain persists despite several weeks of appropriate conservative treatment, referral to a pain medicine specialist is often appropriate. A pain specialist can evaluate symptoms, perform a targeted examination, review imaging when indicated, and determine whether interventional procedures may be helpful.

Interventional treatment options

When a clear pain source has been identified and conservative measures have not provided adequate relief, interventional procedures may be considered as part of a comprehensive plan. These options include:

• Epidural steroid injections, which deliver anti-inflammatory medication near spinal nerves and are most helpful for pain that radiates down the leg due to a herniated disc or spinal stenosis.
• Radiofrequency ablation, which uses heat to disrupt pain signals from specific nerves, most commonly those supplying the facet joints. A more targeted form, basivertebral nerve ablation, has shown promising results for certain types of chronic low back pain associated with Modic changes on MRI.
• Vertebral augmentation (such as kyphoplasty), which is used to treat painful vertebral compression fractures by stabilizing the fractured vertebra.
• Spinal cord stimulation (SCS) and dorsal root ganglion (DRG) stimulation, which involve implantation of a device that delivers mild electrical impulses to interrupt pain signals. These are typically reserved for specific conditions such as persistent pain after previous spine surgery or focal neuropathic pain syndromes.
• Trigger point injections, which target painful muscle knots and can provide relief when muscle-related pain is a primary contributor.

These procedures are most effective when matched to a clearly identified pain generator and used alongside ongoing rehabilitation.

SummaryLow back pain is common, but it is also highly treatable for the majority of patients. The most effective approach begins with staying active, engaging in targeted exercise and physical therapy, and addressing both the mechanical and neurologic aspects of pain. When conservative measures are insufficient, a pain medicine specialist can help identify the source of pain and recommend targeted interventional options. The goal remains the same: to reduce pain, improve function, and help patients return to the activities that matter most.

When pain is severe enough to interfere with daily activities, and other treatment types have not been successful in reducing pain, we'll try other treatment options. Call CentraCare Neurosciences Pain Medicine at 320-240-7859 to make an appointment.