Herniated L5 Disc: When Is Surgery Needed?

Most L5-S1 disc herniations (~90%) improve with non-surgical care. Surgery is reserved for specific indications.

Conservative Management (First-Line)

• Activity modification: Avoid aggravating movements; stay active (bed rest >2 days worsens outcomes).
• NSAIDs +/− muscle relaxant for acute pain.
• Physical therapy: McKenzie extension, core stabilization, nerve glides.
• Epidural steroid injection: For radiculopathy refractory to 4–6 weeks PT/meds.
• Time: Most improve significantly by 6–12 weeks.

Surgical Indications

• Progressive neurologic deficit: Foot drop, worsening weakness.
• Cauda equina syndrome: Saddle anesthesia, bowel/bladder dysfunction — emergency surgery.
• Intractable pain after 6–12 weeks of failed conservative care with concordant imaging.
• Large sequestered fragment unlikely to resorb.

Surgical Options

• Microdiscectomy: Gold standard; 2–3 cm incision, microscope, remove herniated fragment. 90%+ leg pain relief.
• Endoscopic discectomy: Smaller incision, similar outcomes in selected cases.
• Fusion rarely needed for primary herniation; reserved for instability/spondylolisthesis.

Decision-Making

Shared decision with spine surgeon. Factors: symptom severity, duration, neurologic status, patient preferences, imaging correlation. Surgery speeds pain relief but 1–2 year outcomes similar to non-op care.