Lumbar Radiculopathy Treatment in Los Angeles

Lumbar radiculopathy is a neurological condition involving one or more nerve roots in the lumbar spine. These nerves branch away from the spinal canal and travel into the pelvis, legs, and feet, where they control sensation and muscle movement.

When a lumbar nerve root becomes compressed or inflamed, symptoms may develop along the nerve’s pathway. This pattern is different from pain caused only by strained muscles, irritated spinal joints, or other sources of localized lower back pain.

Lumbar radiculopathy is often called a pinched nerve in the lower back. It may also be associated with sciatica when the affected nerve roots contribute to the sciatic nerve.

How a Lumbar Nerve Root Gets Compressed

Lumbar nerve roots exit the spinal canal through openings between adjacent vertebrae called neural foramina. A nerve may become compressed when the spinal canal or one of these openings becomes too narrow.

A herniated disc can press directly against a nearby nerve root. Degenerative changes may also cause discs to lose height, facet joints to enlarge, ligaments to thicken, or bone spurs to develop. These changes can gradually reduce the space available for the nerves.

Compression may occur within the central spinal canal, in the lateral recess where the nerve travels before exiting, or within the neural foramen itself.

Mechanical pressure is not the only source of symptoms. Material released from a damaged or herniated disc may also trigger inflammation around the nerve root, contributing to pain even when the amount of physical compression appears relatively limited.

Common Causes of Lumbar Radiculopathy

Several spinal conditions may cause lumbar nerve compression.

Lumbar disc herniation: The soft center of a spinal disc may push through a weakened area in the disc’s outer layer and press against a nerve root. This is a common cause of sudden radicular pain in younger and middle-aged adults.

Lumbar spinal stenosis: Arthritis, enlarged facet joints, thickened ligaments, and bone spurs may narrow the spinal canal or neural foramina. Stenosis is more common among older adults and may affect multiple nerve roots.

Degenerative disc disease: As a lumbar disc loses height and structure, the openings available for the spinal nerves may become smaller.

Spondylolisthesis: A vertebra that slips forward can narrow the spinal canal or neural foramen and place pressure on a nearby nerve.

Bone spurs: Osteoarthritis can produce additional bone growth around the vertebrae and facet joints. These growths may encroach on a nerve root.

Spinal injuries: A fracture, dislocation, damaged disc, or swelling following an accident may compress or irritate the lumbar nerves.

Less commonly, lumbar radiculopathy may be caused by a spinal cyst, infection, or tumor. Identifying the underlying cause is important because the recommended treatment may differ considerably between these conditions.

Relationship to Sciatica

Lumbar radiculopathy and sciatica are closely related, but the terms do not always mean exactly the same thing.

Lumbar radiculopathy is a clinical condition involving dysfunction of a lumbar or lumbosacral nerve root. It may cause pain, numbness, tingling, altered reflexes, or weakness in a pattern corresponding to the affected nerve.

Sciatica describes pain that travels along the distribution of the sciatic nerve, typically from the lower back or buttock into the back or side of the leg. It most often results from irritation of the L4, L5, or S1 nerve roots that contribute to the sciatic nerve.

A patient can therefore have lumbar radiculopathy that produces sciatica. However, not every case of lumbar radiculopathy follows the classic sciatic nerve pathway. Compression of an upper lumbar nerve root may cause symptoms in the groin or front of the thigh rather than the back of the leg.

Sciatica is also primarily a description of a symptom pattern, while lumbar radiculopathy refers to the underlying nerve-root problem.

Lumbar radiculopathy symptoms vary according to the affected nerve root and the severity of the irritation or compression.

Symptoms commonly affect one side of the body, although conditions such as central spinal stenosis or a large disc herniation may affect both legs. Pain may be constant or intermittent and can worsen during particular positions or movements.

Pain Radiating From the Lower Back Into the Buttock and Leg

The most recognizable symptom is pain that travels away from the lower spine and into the leg. The pain may begin in the lower back, although some patients experience significant leg pain with little or no back pain.

Depending on the affected nerve, the pain may travel through the:

• Buttock
• Front, side, or back of the thigh
• Calf or shin
• Ankle
• Heel
• Top or sole of the foot
• Toes

Radicular pain may feel sharp, shooting, burning, aching, or similar to an electric shock. Coughing, sneezing, straining, prolonged sitting, bending, or lifting may intensify symptoms in some patients.

Patients with lumbar stenosis may notice that leg symptoms worsen while standing or walking and improve when sitting or leaning forward.

Numbness and Tingling in the Leg or Foot

A compressed nerve root can disrupt sensory signals traveling between the leg and the brain. This may produce numbness, tingling, burning, or a pins-and-needles sensation.

The location of sensory changes can help identify the affected nerve root. For example, symptoms may involve the front of the thigh, outer calf, top of the foot, heel, or specific toes.

Some patients describe the affected leg as feeling different from the opposite side even when they can still feel touch. Others notice reduced sensitivity to temperature or difficulty determining where the foot is positioned.

Muscle Weakness and Foot Drop

Lumbar nerve roots also control the muscles used to move the hips, knees, ankles, feet, and toes. Significant compression may cause weakness in a specific muscle group.

Possible signs of lumbar nerve weakness include:

• Difficulty lifting the thigh
• Difficulty straightening the knee
• Trouble climbing stairs
• Difficulty standing on the toes
• Trouble walking on the heels
• Weakness when pushing the foot downward
• Difficulty lifting the foot or toes

Foot drop occurs when weakness makes it difficult to lift the front of the foot. The toes may drag while walking, or the patient may lift the knee unusually high to prevent the foot from catching on the ground.

New or worsening muscle weakness should be evaluated promptly. Prolonged nerve compression can sometimes lead to lasting weakness, muscle loss, or impaired function.

Red-Flag Symptoms

Certain symptoms may indicate severe compression of multiple lumbar nerve roots and require immediate medical evaluation.

Seek emergency care for:

• New loss of bladder or bowel control
• Inability to begin urinating
• Inability to empty the bladder
• Numbness around the groin, genitals, inner thighs, or buttocks
• Rapidly worsening weakness in one or both legs
• Sudden foot drop
• Severe symptoms affecting both legs
• Significant difficulty standing or walking
• Symptoms following a serious fall, collision, or spinal injury
• Back pain accompanied by fever, unexplained weight loss, or a history of cancer

Compression of the cauda equina—the group of nerve roots at the bottom of the spinal canal—is a surgical emergency. Delayed treatment may result in permanent weakness, numbness, sexual dysfunction, or loss of bowel and bladder control.

Evaluation begins with a discussion of the patient’s symptoms, medical history, previous treatment, and activity limitations.

A neurological examination may assess muscle strength, sensation, reflexes, walking ability, and whether particular positions reproduce the pain. A straight-leg-raise test may help identify irritation of certain lower lumbar nerve roots.

X-rays can show spinal alignment, disc-space narrowing, arthritis, or spondylolisthesis. An MRI provides more detailed images of the discs, nerve roots, spinal canal, and surrounding soft tissues.

Electromyography and nerve-conduction studies may sometimes be used to evaluate nerve function or distinguish lumbar radiculopathy from peripheral neuropathy or nerve compression outside the spine.

Non-Surgical Treatment

Many cases of lumbar radiculopathy improve without surgery, particularly when symptoms are caused by an acute disc herniation and progressive neurological weakness is not present.

Nonsurgical treatment may include:

Activity modification: Temporarily reducing heavy lifting, repetitive bending, prolonged sitting, or other activities that worsen symptoms may allow irritation around the nerve to decrease.

Physical therapy: A structured rehabilitation program may improve flexibility, posture, core strength, spinal support, and movement mechanics. Therapy is tailored to the cause of the nerve compression and the positions that relieve or aggravate symptoms.

Medication: Anti-inflammatory medications, pain relievers, muscle relaxants, or medications used for nerve pain may be considered based on the patient’s symptoms and medical history.

Epidural steroid injections: Corticosteroid medication may be placed near the affected nerve root to reduce inflammation and radicular pain. An injection does not remove a herniated disc or bone spur, but it may provide enough relief for the patient to participate in rehabilitation.

Selective nerve-root injections: A targeted injection may provide temporary pain relief and help identify which nerve root is producing symptoms when imaging shows abnormalities at more than one level.

Lifestyle and ergonomic changes: Weight management, appropriate lifting techniques, workstation modifications, and avoiding repetitive activities that overload the lower spine may help reduce recurring symptoms.

The duration of conservative care varies. Patients with manageable pain and stable neurological function may be observed while the nerve irritation improves. Progressive weakness or emergency symptoms generally require more immediate evaluation.

Surgical Treatment

Surgery may be considered when pain remains severe despite an appropriate course of nonsurgical treatment or when nerve compression causes significant or worsening weakness.

The purpose of surgery is to remove the disc material, bone, ligament, or other tissue pressing on the affected nerve.

Lumbar microdiscectomy removes the portion of a herniated disc compressing a nerve root. The procedure may be performed through a relatively small incision using magnification and specialized instruments.

Laminotomy removes a portion of the lamina, the bony structure covering the back of the spinal canal. This creates additional space for the affected nerve while preserving more of the surrounding bone.

Lumbar laminectomy removes a larger portion of the lamina to expand the spinal canal. It is commonly considered when lumbar spinal stenosis compresses one or more nerve roots.

Foraminotomy enlarges the neural foramen through which the nerve exits the spine. Bone spurs, disc material, or other tissues may be removed to relieve pressure.

Lumbar spinal fusion may be added when the affected spinal segment is unstable, when decompression would create instability, or when nerve compression is associated with spondylolisthesis, deformity, or severe disc degeneration.

Fusion options may include anterior lumbar interbody fusion, transforaminal lumbar interbody fusion, posterior lumbar interbody fusion, or lateral lumbar interbody fusion. The appropriate approach depends on the location of the compression, spinal alignment, previous surgery, and the number of levels involved.

Lumbar disc replacement may be considered for carefully selected patients whose symptoms are associated with a damaged lumbar disc. It is generally not the primary treatment for every case of radiculopathy and may not be appropriate when significant facet arthritis, spinal instability, or spondylolisthesis is present.

Some lumbar decompression and fusion procedures can be performed using minimally invasive techniques designed to limit disruption of the surrounding muscles and soft tissues.

BAO Spine offers minimally invasive procedures including microdiscectomy, laminectomy, and lumbar interbody fusion. The specific operation recommended depends on the source of nerve compression, neurological findings, spinal stability, imaging results, and the patient’s individual goals.