Sciatica

TL;DR

Sciatica is pain that radiates along the sciatic nerve, traveling from the lower back through the buttock and down the leg. St. Louis Pain Center in St. Louis treats sciatica with nerve blocks, kyphoplasty for related spinal fractures, and sports medicine rehabilitation. Most patients achieve meaningful relief through non-surgical interventions that target the specific point of nerve compression.

When Pain Shoots Down Your Leg and Will Not Stop

It hit like a bolt of lightning. One moment you were bending over or lifting something, and the next a searing pain shot from your lower back through your buttock and down your leg. Or maybe it came on gradually, a dull ache that sharpened over weeks until sitting, standing, and lying down all became uncomfortable.

Sciatica is one of the most recognizable pain conditions. Nearly everyone knows someone who has experienced it. The shooting, burning pain that follows the path of the sciatic nerve is unmistakable once it starts.

At St. Louis Pain Center, sciatica is among the most treatable conditions we manage. The sciatic nerve is the longest and thickest nerve in the body, running from the lower spine down through each leg. When this nerve is compressed or irritated at its origin point in the lumbar spine, the pain can be severe enough to stop you in your tracks.

The good news is clear. Sciatica responds well to treatment, especially when the exact point of nerve compression is identified. Most patients do not need surgery. Targeted interventional procedures can reduce inflammation at the compression site, relieve pressure on the nerve, and allow natural healing to occur.

If leg pain is disrupting your life, this page explains why it is happening and what your options are.

Understanding Sciatica

Answer Capsule: Sciatica is not a condition itself but a symptom of an underlying problem compressing or irritating the sciatic nerve. The nerve runs from the L4-S3 spinal levels through the buttock and down the back of each leg.

The sciatic nerve forms from five nerve roots that exit the lower lumbar and upper sacral spine (L4, L5, S1, S2, and S3). These roots merge into a single large nerve that passes through the pelvis, travels beneath the piriformis muscle in the buttock, and continues down the back of the thigh. At the knee, it splits into two branches that extend to the foot.

Pain can originate anywhere along this path, though the most common compression points are in the lumbar spine where the nerve roots exit the vertebral column. The character of the pain provides diagnostic clues. Burning or electric pain suggests nerve irritation. Numbness indicates signal blockage. Weakness points to significant nerve compression.

True sciatica follows the nerve’s anatomical path. Pain that stays in the lower back without radiating into the leg is usually not sciatica, even though many patients use the term broadly. Distinguishing true sciatica from other types of back and leg pain is important because the treatment approaches differ.

Sciatica typically affects one side of the body. Bilateral sciatica (affecting both legs simultaneously) is less common and may indicate a more serious condition called cauda equina syndrome, which requires urgent evaluation.

Common Causes of Sciatica

Lumbar Disc Herniation

A herniated disc in the lower spine is the most common cause of sciatica, accounting for roughly 90% of cases. When the disc’s inner material pushes through its outer shell, it can press directly on an adjacent nerve root. The L4-L5 and L5-S1 disc levels are most frequently involved because they bear the greatest mechanical load.

Degenerative Disc Disease

As lumbar discs lose height and hydration over time, the spaces where nerve roots exit the spine narrow. This foraminal narrowing gradually compresses nerve roots, producing sciatica that develops slowly and worsens over months to years. It is a leading cause of sciatica in adults over 50.

Lumbar Spinal Stenosis

Spinal stenosis narrows the central canal of the lumbar spine, compressing multiple nerve roots simultaneously. It causes leg pain, heaviness, and weakness that worsens with walking and standing. Patients often find relief by leaning forward or sitting down, which temporarily opens the spinal canal.

Spondylolisthesis

When one vertebra slips forward over the one beneath it, the resulting misalignment can compress nerve roots. Spondylolisthesis can be caused by a stress fracture in the vertebra (isthmic type) or by degenerative changes in the facet joints and discs (degenerative type). It is a common finding in adults with chronic sciatica.

Piriformis Syndrome

The piriformis muscle lies deep in the buttock, and the sciatic nerve passes directly beneath it (or in some people, through it). When this muscle becomes tight or spasms, it can compress the sciatic nerve at a point outside the spine. Piriformis syndrome produces buttock pain and sciatica without any spinal abnormality.

Bone Spurs (Osteophytes)

The body produces bone spurs as a response to spinal degeneration. These bony growths can protrude into the spaces where nerve roots travel, compressing them mechanically. Bone spurs develop gradually and cause sciatica that progressively worsens over time.

Sacroiliac Joint Dysfunction

The sacroiliac (SI) joint connects the spine to the pelvis. When this joint becomes inflamed or moves abnormally, it can irritate nearby nerve roots and produce pain that mimics sciatica. SI joint dysfunction is sometimes confused with true spinal sciatica, making accurate diagnosis essential.

Spinal Tumors and Infections

Rarely, sciatica can result from a tumor or infection affecting the lumbar spine. These conditions compress nerve roots from outside the normal spinal structures. Persistent sciatica that does not respond to standard treatment warrants further investigation to rule out these causes.

Pregnancy-Related Sciatica

The weight and postural changes of pregnancy can compress the sciatic nerve through a combination of increased lumbar load, pelvic joint loosening, and direct pressure from the growing uterus. Pregnancy-related sciatica is common in the third trimester and usually resolves after delivery.

Common Symptoms of Sciatica

• Shooting or burning pain that travels from the lower back through the buttock and down the leg
• Pain that worsens when sitting, coughing, or sneezing
• Numbness in the leg or foot along the nerve path
• Tingling or pins-and-needles sensation in the leg, foot, or toes
• Weakness in the affected leg making it difficult to stand or walk
• Sharp pain that makes standing up from a seated position difficult
• Pain on one side of the body only (unilateral presentation)
• A constant ache in the buttock that does not relent
• Difficulty controlling the foot or a sensation of foot drop in severe cases

How We Effectively Treat Sciatica in St. Louis

Answer Capsule: Sciatica treatment targets the specific point of nerve compression. Interventional procedures reduce inflammation and relieve pressure on the sciatic nerve, while rehabilitation strengthens the spine to prevent recurrence.

Nerve Blocks

Nerve blocks are among the most effective interventions for sciatica. Selective nerve root blocks deliver anti-inflammatory medication directly to the compressed nerve root, reducing swelling and calming irritation. Epidural nerve blocks treat inflammation across a broader area of the spinal canal. These procedures provide both diagnostic confirmation and therapeutic relief. Many patients experience significant pain reduction within days.

Kyphoplasty

When sciatica results from or coexists with vertebral compression fractures, kyphoplasty addresses the structural collapse that contributes to nerve compression. By restoring vertebral height and stabilizing the fracture, kyphoplasty reduces the mechanical factors driving nerve root compression. This procedure is particularly relevant for older adults with osteoporosis-related spinal changes.

Sports Medicine and Rehabilitation

A sports medicine approach to sciatica combines targeted exercise, manual therapy, and movement education. Core stabilization programs reduce mechanical stress on the lumbar spine. Nerve mobilization techniques improve the sciatic nerve’s ability to glide freely through surrounding tissues. Flexibility training addresses muscle tightness in the hips and hamstrings that contributes to nerve compression. Progressive rehabilitation builds spinal resilience to prevent sciatica from returning.

Activity Modification and Self-Management

Certain positions and movements aggravate sciatic nerve compression while others relieve it. Our team provides specific guidance on sitting posture, sleeping positions, and movement modifications that reduce nerve irritation during the healing process. Understanding which activities to modify and which to maintain accelerates recovery.

Expert Care for Sciatica in the St. Louis Area

Sciatica seems straightforward, though accurate diagnosis is more complex than many patients expect. The same symptom pattern can originate from a herniated disc, spinal stenosis, piriformis syndrome, or SI joint dysfunction, and each cause requires a different treatment. The St. Louis medical community benefits from proximity to Washington University School of Medicine, whose spine research contributes to improved diagnostic and treatment approaches.

St. Louis Pain Center applies precise diagnostic methods to identify the exact source of sciatic nerve compression. This targeted approach ensures that treatment addresses the actual cause rather than just masking symptoms.

Convenient Access from Your Neighborhood

Our clinic at 4455 Telegraph Rd #250, St. Louis, MO 63129 is conveniently located for patients from Oakville, Mehlville, Lemay, Affton, Concord, Arnold, Fenton, Crestwood, Sunset Hills, Webster Groves, and Kirkwood. Call (314) 846-2100 for scheduling or directions.

Schedule Your Sciatica Evaluation

Sciatica that persists beyond a few weeks or involves leg weakness or numbness warrants professional evaluation. Nerve compression can cause progressive damage when left untreated. Call St. Louis Pain Center at (314) 846-2100 or schedule online to begin your evaluation.

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Sciatica FAQs for St. Louis Patients

How long does sciatica usually last?

Acute sciatica from a mild disc bulge often improves within four to eight weeks with appropriate treatment. Chronic sciatica from degenerative conditions may require ongoing management. The duration depends heavily on the underlying cause and how quickly treatment begins. Early intervention typically produces shorter recovery times.

Can sciatica go away on its own?

Mild cases sometimes resolve without treatment, though there is no way to predict which cases will. Waiting carries risk because prolonged nerve compression can cause permanent damage. Professional evaluation determines whether your case is likely to resolve naturally or requires intervention.

Is walking good for sciatica?

Short, gentle walks are usually beneficial. Walking promotes blood flow to the affected nerve and prevents deconditioning. However, walking through severe pain or walking long distances before the nerve has calmed down can worsen symptoms. Start with short distances on flat surfaces and increase gradually as symptoms allow.

What is the difference between sciatica and back pain?

Sciatica specifically involves pain that radiates down the leg following the sciatic nerve path. Back pain stays in the back. Many patients have both conditions simultaneously. The distinction matters because treatment for back pain alone will not resolve sciatic nerve compression, and vice versa.

Can sciatica cause permanent nerve damage?

If severe nerve compression continues for an extended period, it can cause lasting damage. Warning signs include progressive weakness in the leg or foot, loss of reflexes, and significant numbness. Seek prompt evaluation if you notice weakness developing, particularly difficulty lifting your foot (foot drop) or loss of bladder control.

Do I need surgery for sciatica?

Most patients with sciatica do not require surgery. Interventional procedures like nerve blocks and epidural injections effectively treat the majority of cases. Surgery is typically reserved for patients with progressive neurological deficits or those who do not improve after a reasonable course of non-surgical treatment. A thorough evaluation at St. Louis Pain Center helps determine the most appropriate path.

Related Conditions

Sciatica is closely related to other spinal conditions. Learn about back pain for broader information on lumbar spine problems, or chronic pain if your sciatica has persisted for months or longer. Some patients with sciatica also develop neck pain from compensatory posture changes.