Decide what the operation is meant to treat

Discectomy removes disc material contributing to a concordant lumbar nerve-root problem. The selection question comes before the choice of incision or instrument. Symptoms, function, examination and imaging must agree sufficiently to make decompression a reasonable option. Persistent sciatica after nonoperative treatment can prompt surgical discussion; serious neurological deterioration changes the urgency.12

Severe low-back/leg pain with new bladder, bowel or sexual disturbance, or saddle/perineal numbness, needs immediate local assessment.3 Progressive substantial weakness should not be put through a routine waiting period. A study's minimum symptom duration describes its enrollment, not a safe delay for an individual with a new deficit.2

Microdiscectomy and endoscopic approaches

Microdiscectomy and endoscopic approaches provide different routes to decompression. “Endoscopic” includes multiple techniques; a smaller skin opening alone does not prove better nerve recovery or long-term results. Surgeon training, anatomy, the location of the material and the clinical target matter. WFNS found insufficient evidence to recommend one specific minimally invasive procedure for all primary lumbar herniations.2

The 2022 PTED trial evaluated percutaneous transforaminal endoscopic discectomy against open microdiscectomy in selected adults with MRI-concordant lumbar sciatica. At twelve months it met a five-point noninferiority margin on a 0–100 leg-pain scale. The main analysis omitted 125 PTED learning cases; sensitivity analyses included them. The authors cautioned that favorable differences were small and might not be clinically relevant. Prior same/adjacent-level surgery, cauda equina and several other situations were excluded.4

This evidence supports a specific option in a studied population, not every endoscopic device, surgeon or revision operation. Discuss complications such as dural tear, infection, nerve injury, persistent symptoms and possible repeat surgery. The trial reported repeat operations in both groups and cannot guarantee an individual's outcome.4

Fusion is a separate indication

For isolated first lumbar herniation with radiculopathy, routine fusion after disc removal is not recommended by WFNS. Separately assessed instability, severe degeneration or substantial chronic axial pain can alter the discussion. Cervical ACDF has its own context and cannot be justified or rejected by copying this lumbar recommendation.2

Fusion does not promise the elimination of all future spinal narrowing, pain or repeat surgery. Nor does disc removal mean everyone inevitably needs fusion later. Ask why stabilization is needed in this particular case, what alternatives exist, and what added harms and follow-up it entails.

SPORT's long-term adjusted as-treated results favored discectomy for selected lumbar radiculopathy, but the randomized assigned-treatment primary outcomes were not significant with extensive crossover; attrition and confounding limit interpretation. Work outcomes should not be inferred from pain relief.5

References

  1. NICE. NG59: Low back pain and sciatica in over 16s. Recommendations (updated 2020). Source ↩
  2. Costa F et al. Role of surgery in primary lumbar disk herniation: WFNS recommendations. World Neurosurg X. 2024;22:100276. Source ↩
  3. NICE. NG127: Suspected neurological conditions. Adult recommendations 1.7 and 1.10. Source ↩
  4. Gadjradj PS et al. PTED versus open microdiscectomy: randomized non-inferiority trial. BMJ. 2022;376:e065846. Source ↩
  5. Lurie JD et al. Eight-year SPORT results for lumbar disc herniation. Spine. 2014;39:3–16. Source ↩