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Lumbar Disc Herniation

Common Cause of Sciatica and Lumbar Radiculopathy with Variable Surgical Indications

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Nöroloji department. Book Appointment →

What is Lumbar Disc Herniation?

Lumbar disc herniation is one of the most common causes of acute low back pain with radiculopathy, affecting approximately 1–3% of population annually with peak incidence age 30–50.

Pathophysiology: degenerative changes in nucleus pulposus and annulus fibrosus lead to disc protrusion (contained), extrusion (uncontained), or sequestration (free fragment) compressing nerve roots in the lateral recess or neuroforamina.

Most common levels: L5-S1 (45–50%, affecting S1 nerve root) and L4-L5 (40–45%, affecting L5 nerve root); higher lumbar levels (L1-L4) less common but present with different patterns.

Spectrum from asymptomatic radiologic findings (30% of asymptomatic adults have disc herniation on MRI) to severe radiculopathy with neurological deficit; clinical correlation essential.

Symptoms

Acute low back pain often preceded by activity (lifting, twisting, prolonged sitting)
Sciatica: unilateral leg pain radiating below the knee in dermatomal distribution; sharp, burning, or shooting; often worse than back pain
L5 radiculopathy (L4-L5 herniation): pain in lateral thigh and leg, dorsal foot; weakness of foot dorsiflexion (heel walk), great toe extension; sensory loss over dorsum of foot and great toe
S1 radiculopathy (L5-S1 herniation): pain in posterior thigh and calf, lateral foot; weakness of plantar flexion (toe walk); sensory loss over lateral foot and small toe; absent ankle reflex
L4 radiculopathy (L3-L4 herniation): pain in anterior thigh and medial leg; weakness of quadriceps and ankle dorsiflexion; absent patellar reflex
Aggravating factors: forward bending, sitting, coughing, sneezing, Valsalva maneuvers
Relieving factors: lying supine with knees flexed, walking, lying on side
Cauda equina syndrome (red flag): bilateral leg pain, saddle anesthesia, urinary retention or incontinence, fecal incontinence, severe progressive weakness — surgical emergency

Risk Factors

Adults aged 30–50 years (peak incidence)
Male predominance (slightly higher in men)
Occupational factors: heavy lifting, twisting, prolonged sitting, vibrating equipment, truck driving
Smoking (impairs disc nutrition and accelerates degeneration)
Obesity
Sedentary lifestyle and poor core muscle conditioning
Genetic predisposition: family history
Prior lumbar disc herniation or surgery
Pregnancy (increased lumbar lordosis and weight)
Trauma or sudden mechanical injury
Connective tissue disorders (rare)

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Acute severe low back pain with leg pain
  • Progressive neurological deficit: weakness, sensory loss, reflex changes
  • Cauda equina syndrome features (urgent surgical emergency): bilateral leg symptoms, saddle anesthesia, bowel/bladder dysfunction
  • Pain not responding to conservative management within 4–6 weeks
  • Recurrent sciatica or persistent symptoms beyond 12 weeks
  • Suspected secondary cause: malignancy (history of cancer, weight loss, age >50), infection (fever, IV drug use, immunosuppression), trauma

Treatment Methods

01
Diagnostic evaluation: detailed history, neurological examination including motor strength testing (manual muscle testing, heel/toe walking), sensation, reflexes, straight leg raise test, Lasègue's sign, crossed straight leg raise (specific for disc herniation)
02
Red flag screening: cauda equina symptoms, progressive deficit, infection signs, malignancy history, trauma — warrant urgent imaging and intervention
03
Imaging: MRI without contrast is gold standard for symptomatic herniation; CT myelography if MRI contraindicated; plain radiographs limited utility but assess alignment and rule out fracture
04
Conservative management (effective in 70–90% within 6–12 weeks): patient education, activity modification (avoid bed rest, encourage walking), heat/ice, NSAIDs, acetaminophen, short course of muscle relaxants (cyclobenzaprine), gabapentinoids (gabapentin, pregabalin) for radicular pain
05
Physical therapy: McKenzie method, core strengthening, lumbar stabilization exercises, posture correction, gradual return to activities
06
Epidural steroid injection: useful for severe radicular pain not responding to conservative measures; transforaminal or interlaminar approach; provides 50–80% short-term pain relief, may bridge to recovery
07
Surgical indications: cauda equina syndrome (immediate), progressive motor deficit, severe pain unresponsive to 6–12 weeks of conservative management with corresponding imaging findings
08
Microdiscectomy (gold standard): minimally invasive surgical removal of herniated disc material with limited disc resection; success rate 80–90% with rapid recovery and return to work
09
Lumbar discectomy with tubular retractors or endoscopic approach: emerging minimally invasive techniques with smaller incisions and faster recovery
10
Open laminectomy: rarely needed for routine herniation; useful for large central herniation, severe stenosis, or revision surgery
11
Fusion: not indicated for routine disc herniation; reserved for instability, severe degenerative spondylolisthesis, or recurrent herniation
12
Postoperative care: early ambulation, activity restriction (no heavy lifting, twisting, prolonged sitting for 4–6 weeks), gradual return to work, physical therapy at 2–6 weeks postoperatively
13
Surgical complications (rare): durotomy, infection, nerve injury, recurrence (5–10%), persistent symptoms (failed back surgery syndrome)
14
Prevention of recurrence: proper lifting techniques, core strengthening, weight management, smoking cessation, ergonomic workplace modifications
15
Long-term follow-up: clinical assessment at 6 weeks and 3 months postoperatively, gradual return to all activities, surveillance for recurrence, management of degenerative comorbidities

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.