A patient guide to disc herniations, anterolisthesis, conservative care, and timely neurosurgical evaluation
Neck pain and low back pain are among the most common reasons for medical consultation. Many patients become worried when an MRI reports a disc herniation, disc protrusion, degeneration, arthritis, or anterolisthesis. However, one key message must be clear: not every cervical or lumbar pain condition requires surgery. Not every disc herniation needs an operation. Not every anterolisthesis is surgical. And not every MRI finding explains the patient’s pain.
Spine surgery can be life-changing when it is properly indicated, but it can also be unnecessary when the condition can improve with conservative management. This is why evaluation by a neurosurgeon specialized in spine care is essential: not only to know when surgery is needed, but also to know when surgery should be avoided.
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We do not operate on the MRI; we treat the patient
A fundamental principle in spine surgery is that imaging findings must match the patient’s symptoms. Many people have small disc herniations, dehydrated discs, or degenerative changes without significant nerve compression. In these cases, operating on an image may be a mistake if the pain does not match the affected level or if there is no relevant neurological deficit.
A specialist must integrate the clinical history, neurological examination, type of pain, strength, sensation, reflexes, gait, imaging findings, and response to previous treatment.
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Patients who are usually NOT surgical candidates
Most patients with neck or low back pain can begin with non-surgical treatment, especially when there is no progressive neurological deficit and no red-flag symptoms.
- Muscular, postural, or mechanical neck or low back pain without significant neurological compression.
- Small disc herniations or protrusions without loss of strength, bowel or bladder dysfunction, or persistent disabling pain.
- Non-specific low back pain, even when mild or moderate degenerative changes are seen on MRI.
- Mild to moderate sciatica that improves with medication, physical therapy, and activity modification.
- Cervical radiculopathy without progressive weakness and without signs of myelopathy.
- Stable grade I or II anterolisthesis without significant instability or severe neurological symptoms.
- Age-related degenerative findings that do not match the patient’s symptoms.
💊 What treatment can be tried before considering surgery?
Conservative treatment does not mean “doing nothing.” It means treating the condition in a structured, supervised, and professional way before recommending surgery.
- Patient education and clear explanation of the diagnosis.
- Anti-inflammatory or pain medications when appropriate.
- Short-term muscle relaxants in selected cases.
- Physical therapy focused on mobility, strengthening, pain control, and posture.
- Progressive exercise, weight reduction when needed, and activity modification.
- Selective injections or blocks in some cases of radicular or facet-related pain.
- Clinical follow-up to monitor neurological evolution.
🧠 Disc herniations: when are they NOT surgical?
A small or moderate disc herniation does not automatically require surgery. Many herniations can become less inflamed, symptoms can improve, or the condition can become clinically tolerable with non-surgical treatment. If the patient has no progressive weakness, no severe compression, no bowel or bladder dysfunction, and the pain is improving, supervised conservative care may continue.
In simple terms: surgery does not depend only on the size of the herniation; it depends on what the herniation is doing to the nerve and to the patient.
🦴 Anterolisthesis: when is it NOT surgical?
Anterolisthesis means that one vertebra slips forward over another. But not all cases are severe. Low-grade anterolisthesis, especially grade I or II, can often be managed without surgery if it is stable and does not cause significant neurological compression.
Treatment may include physical therapy, weight control, core strengthening, pain management, and monitoring with dynamic X-rays when instability is suspected.
⚠️ When can surgery be necessary?
Surgery should be considered when the mechanical or neurological problem exceeds what conservative care can resolve, or when there is risk of neurological damage.
- Cauda equina syndrome: loss of bladder or bowel control, saddle anesthesia, severe or progressive weakness. This is an emergency.
- Progressive motor deficit: worsening weakness in the arm, hand, leg, or foot.
- Cervical myelopathy: hand clumsiness, gait disturbance, hyperreflexia, loss of balance, or spinal cord compression.
- Severe disabling radicular pain that does not improve after a reasonable period of conservative treatment.
- Large disc herniation with clear nerve compression and matching symptoms.
- Severe cervical or lumbar stenosis with major functional limitation.
- Unstable, progressive anterolisthesis or spondylolisthesis associated with significant neurological compression.
- Deformity, fracture, tumor, infection, or structural instability.
🩺 The importance of timely neurosurgical evaluation
Seeing a neurosurgeon early does not mean that the patient will undergo surgery. On the contrary: specialized evaluation can prevent unnecessary surgery, guide the correct treatment, and identify in time the cases that truly require an operation.
The specialist can determine whether pain is coming from the disc, the nerve, the facet joints, the muscles, instability, or another cause. The neurosurgeon can also decide whether the patient needs medication, physical therapy, injections, observation, or surgery.
The key is not to delay evaluation when red flags are present, but also not to rush into surgery when the condition can improve without it.
✅ Conclusion
Most cervical and lumbar pain conditions do not require surgery. Many small herniations, protrusions, and low-grade anterolisthesis cases can be treated with well-directed conservative management. However, when there is significant neurological compression, loss of strength, myelopathy, cauda equina syndrome, persistent disabling pain, or instability, surgery may be necessary and should be evaluated promptly.
Modern spine medicine is not about operating more; it is about operating better: on the right patient, at the right time, with the right technique.
— Dr. Alejandro Ernesto Méndez Farías
Neurosurgery and Spine Surgery
References
- World Health Organization. WHO guideline for non-surgical management of chronic primary low back pain in adults in primary and community care settings. Geneva: WHO; 2023.
- Briggs AM, et al. The World Health Organization guideline for non-surgical management of chronic primary low back pain in adults. 2025.
- Jin H, et al. A Systematic Review of Treatment Guidelines for Lumbar Disc Herniation. Neurospine. 2025.
- Lee JJ, et al. Evidence-Based Clinical Practice Guidelines for Patients With Lumbar Disc Herniation With Radiculopathy. 2025.
- Costa F, et al. Role of surgery in primary lumbar disk herniation: WFNS Spine Committee recommendations. Neurospine. 2024.
- Margetis K, et al. Cervical Radiculopathy. StatPearls/NCBI Bookshelf. Updated 2025.
- Carrera CX, et al. Pathophysiology, diagnosis, and management of cervical radiculopathy. American Journal of Medicine. 2026.
- Nedelea DG, et al. Surgical and non-surgical management of spondylolisthesis: a comprehensive review. 2025.
- North American Spine Society. Clinical Guideline for the Diagnosis and Treatment of Lumbar Disc Herniation with Radiculopathy.
- North American Spine Society. Diagnosis and Treatment of Degenerative Lumbar Spondylolisthesis.
- National Institute for Health and Care Excellence. Low back pain and sciatica in over 16s: assessment and management. NICE guideline NG59.
- American Association of Neurological Surgeons. Cauda Equina Syndrome. Patient information resource.
- Cleveland Clinic. Cauda Equina Syndrome: symptoms and treatment. Updated 2024.