Lumbar Radiculopathy

What is Lumbar Radiculopathy?

Lumbar radiculopathy occurs when a nerve root in the lower spine becomes compressed, inflamed, or irritated. It is commonly called a pinched nerve in the lower back and may cause pain, numbness, tingling, or weakness that travels into the buttock, hip, thigh, calf, ankle, or foot.

Radiating leg pain caused by lumbar nerve irritation is often described as sciatica. However, sciatica describes a pattern of symptoms, while lumbar radiculopathy identifies irritation or compression of a specific nerve root.

Common causes include lumbar disc herniation, bulging discs, spinal stenosis, foraminal narrowing, bone spurs, degenerative disc disease, spondylolisthesis, and spinal instability. The affected nerve root influences where pain, numbness, weakness, and reflex changes appear.

De Novo Brain & Spine evaluates adults with suspected lumbar radiculopathy in Stockbridge, Georgia. Evaluation may include a neurological examination, lumbar spine imaging, nerve testing when appropriate, non-surgical treatment recommendations, or surgical planning when structural nerve compression is present.

Lumbar Radiculopathy vs. Sciatica

Lumbar radiculopathy is a medical diagnosis involving irritation or compression of a lumbar or sacral nerve root.

Sciatica describes pain that follows the sciatic nerve pathway, usually from the lower back or buttock into the thigh, calf, or foot. Lumbar radiculopathy is one of the most common causes of sciatica, but leg pain may also originate from the hip, sacroiliac joint, peripheral nerves, or other conditions.

A neurological examination helps determine whether leg symptoms follow a specific nerve-root pattern and whether weakness, sensory loss, or reflex changes are present.

Common Signs and Symptoms

Lumbar radiculopathy symptoms depend on which lumbar or sacral nerve root is affected and how severe the nerve irritation or compression is.

Common signs and symptoms may include:

• Low back pain with pain traveling into the buttock, hip, thigh, calf, or foot
• Sciatica, meaning radiating leg pain along the sciatic nerve pathway
• Sharp, burning, shooting, or electric-like leg pain
• Pain that travels below the knee
• Numbness or tingling in the leg or foot
• Pins-and-needles sensation in the lower extremity
• Weakness in the hip, leg, ankle, or foot
• Foot drop, meaning difficulty lifting the front of the foot
• Reduced reflexes in the knee or ankle
• Pain that worsens with sitting, bending, coughing, sneezing, lifting, or certain movements
• Pain that worsens with standing or walking in some spinal stenosis cases
• Difficulty walking normally because of pain, numbness, or weakness

Seek urgent medical evaluation for lumbar radiculopathy with progressive leg weakness, foot drop, numbness in the groin or saddle area, new bowel or bladder problems, fever, unexplained weight loss, history of cancer, severe pain after trauma, or rapidly worsening neurological symptoms. Seek emergency medical care or call 911 for symptoms concerning for cauda equina syndrome, including loss of bowel or bladder control, severe leg weakness, or saddle anesthesia.

What Causes This Condition?

Lumbar radiculopathy occurs when a nerve root in the lower spine becomes irritated, inflamed, or compressed. The cause may involve the spinal disc, joints, bones, ligaments, or nearby soft tissues.

Possible causes and related conditions may include:

• Lumbar herniated disc, when disc material presses on or irritates a nerve root
• Bulging disc
• Lumbar spinal stenosis, which is narrowing around the spinal canal or nerve roots
• Foraminal stenosis, which is narrowing where a nerve exits the spine
• Degenerative disc disease, involving wear or breakdown of spinal discs
• Facet joint disease or arthritis-related spine changes
• Bone spurs, also called osteophytes
• Spondylolisthesis, when one vertebra slips forward relative to another
• Spondylosis, or degenerative arthritis of the spine
• Spinal instability
• Traumatic spine injury in selected cases
• Vertebral compression fracture or other spinal fracture in selected cases
• Spinal tumor, infection, inflammatory disease, or cyst in less common cases
• Prior lumbar spine surgery or recurrent nerve compression in selected patients

These causes and risk factors do not mean every patient with back or leg pain has lumbar radiculopathy. Treatment planning depends on symptoms, neurological examination, imaging findings, response to prior care, and overall health.

How Is Lumbar Radiculopathy Diagnosed?

Lumbar radiculopathy is diagnosed through medical history, physical examination, neurological examination, and imaging or nerve testing when appropriate. The evaluation also helps distinguish lumbar radiculopathy from sciatica caused outside the spine, peroneal neuropathy, peripheral neuropathy, hip disease, sacroiliac joint pain, or other conditions.

Common diagnostic steps may include:

• Medical history and symptom review to understand low back pain, leg pain, numbness, tingling, weakness, symptom pattern, triggers, injury history, and prior treatment
• Physical examination to evaluate posture, range of motion, tenderness, muscle spasm, walking pattern, and painful movement
• Neurological examination to assess strength, sensation, reflexes, coordination, gait, balance, and signs of nerve root involvement
• Straight leg raise testing or other nerve tension testing when disc herniation or nerve irritation is suspected
• X-rays of the lumbar spine to evaluate alignment, arthritis, disc space narrowing, spondylolisthesis, fracture, or degenerative change
• Flexion-extension X-rays in selected cases to assess abnormal motion or lumbar instability
• MRI of the lumbar spine to evaluate nerve root compression, herniated disc, foraminal stenosis, spinal stenosis, tumor, infection, fracture, or other soft-tissue findings
• CT scan of the lumbar spine when bone detail, fracture, arthritis, or surgical planning requires further evaluation
• CT myelogram in selected cases when MRI is not possible or when additional detail around the spinal canal and nerve roots is needed
• Electromyography and nerve conduction studies, also called EMG/NCS, when symptoms may overlap with peroneal neuropathy, peripheral neuropathy, plexopathy, or another nerve disorder
• Blood tests in selected cases when infection, inflammatory disease, cancer-related concern, or another medical condition is suspected

The goal of diagnosis is to identify the affected nerve root, determine the cause of nerve compression, and decide whether conservative care, injections, or surgical evaluation may be appropriate.

Treatment Options

Lumbar radiculopathy treatment depends on the cause, severity, duration, neurological examination, imaging findings, prior treatment, activity limitations, and overall health. Many patients begin with non-surgical care when there is no progressive neurological deficit, cauda equina syndrome, fracture, infection, tumor, or other urgent concern.

Treatment options may include:

• Activity modification to reduce positions, lifting, bending, or movements that worsen symptoms
• Physical therapy to improve core strength, lumbar mobility, posture, flexibility, and walking mechanics
• Home exercise and stretching when recommended by a clinician or therapist
• Heat, ice, or other comfort measures for short-term symptom relief
• Anti-inflammatory medication, acetaminophen, muscle relaxants, or nerve pain medication when medically appropriate
• Treatment of posture, ergonomic, or activity-related contributors
• Lumbar epidural steroid injection in selected cases involving nerve root inflammation or radiating leg pain
• Selective nerve root block in selected cases when diagnostic or therapeutic nerve-targeted injection is appropriate
• Microdiscectomy in selected cases involving lumbar disc herniation with persistent or progressive nerve compression symptoms
• Lumbar laminectomy or decompression in selected cases involving spinal stenosis or nerve root compression
• Foraminotomy in selected cases when narrowing of the nerve exit opening is a major source of compression
• Lumbar fusion, such as transforaminal lumbar interbody fusion, lateral interbody fusion, or anterior lumbar interbody fusion, in selected cases involving instability, deformity, spondylolisthesis, or certain recurrent spine conditions
• Treatment of fracture, tumor, infection, or other structural cause when one is identified
• Rehabilitation and follow-up care to monitor pain, strength, sensation, walking, function, and nerve recovery

Surgery is not appropriate for every patient with lumbar radiculopathy. Neurosurgical treatment may be considered when symptoms are caused by structural nerve compression, progressive weakness, foot drop, spinal stenosis, herniated disc, instability, or symptoms that do not improve with appropriate non-surgical care

Frequently Asked Questions About Lumbar Radiculopathy

What does lumbar radiculopathy feel like?
It may cause sharp, burning, shooting, or electric-like pain extending from the lower back into the buttock, thigh, calf, ankle, or foot. Numbness, tingling, weakness, and reflex changes may also occur.

What causes lumbar radiculopathy?
Common causes include a herniated disc, bulging disc, spinal stenosis, foraminal narrowing, bone spurs, degenerative disc disease, spondylolisthesis, and spinal instability.

Is lumbar radiculopathy the same as sciatica?
Not exactly. Lumbar radiculopathy refers to irritation or compression of a spinal nerve root. Sciatica describes pain along the sciatic nerve pathway and is often a symptom of lumbar radiculopathy.

Can lumbar radiculopathy improve without surgery?
Many patients improve with activity modification, physical therapy, medication, and selected injections. Surgery may be considered when structural nerve compression causes persistent pain, progressive weakness, foot drop, or other significant neurological symptoms.

When is lumbar radiculopathy an emergency?
Emergency evaluation is necessary for new bowel or bladder dysfunction, saddle numbness, severe or rapidly worsening leg weakness, or symptoms suggesting cauda equina syndrome.