Answer: Ten lumbar spine conditions account for the majority of low back pain cases: disc herniation, lumbar stenosis, degenerative disc disease, spondylolisthesis, facet arthropathy, sacroiliac joint dysfunction, sciatica, annular tears, foraminal stenosis, and muscle strain. Each carries its own pain pattern, imaging signature, and best-fit treatment.

Key Takeaways

  • Disc-driven conditions account for a large share of lumbar pain.
  • Imaging alone does not diagnose — pattern plus exam confirms which condition drives the pain.
  • Each condition has a different first-line treatment path.
  • Clinical evaluation is the only way to know which condition fits your case.

Low back pain has dozens of potential drivers, but ten conditions account for the majority of cases seen in spine clinics. This guide walks through each — what it is, how it presents, and where treatment usually starts. For broader lumbar anatomy and context, see what the lumbar spine is and how it works. For diagnostic next steps, see how to tell if your back pain comes from the lumbar spine. For the condition-by-condition FAQ, see lumbar spine conditions patient FAQ.

1. Lumbar disc herniation

A disc herniation occurs when the inner nucleus pushes through a tear in the outer annulus, pressing on nerve structures. Pain frequently radiates down one leg in a dermatomal pattern. Most herniations improve with conservative care across 6 to 12 weeks. Persistent cases respond to interventional or biologic disc repair when imaging confirms annular damage.

2. Lumbar spinal stenosis

Stenosis is narrowing of the spinal canal that compresses the nerves. Classic presentation: pain on standing or walking, relief on sitting or leaning forward. Decompression surgery is one path; structured PT, epidural injections, and activity modification are the conservative path.

3. Degenerative disc disease

Age-related disc wear that produces axial low back pain, sometimes with referred leg symptoms. Not every degenerative disc on imaging is painful — pattern plus exam confirms whether the disc is the driver. Biologic disc repair addresses the annular damage that drives pain in select cases.

4. Spondylolisthesis

One vertebra slips forward over the one below. Grades 1-2 frequently respond to conservative care; grades 3-4 with mechanical symptoms move toward stabilization. Imaging plus exam identifies the grade and the right path.

5. Facet arthropathy

Wear in the small paired joints at the back of each vertebra. Pain loads on extension and rotation, centers along the spine, reproduces on paraspinal palpation. Facet injection is diagnostic and therapeutic; positive response qualifies the patient for radiofrequency ablation.

6. Sacroiliac joint dysfunction

The SI joint between sacrum and pelvis is a recognized pain source that is misread as lumbar in a meaningful share of cases. Pain centers at the dimple of the buttock and refers into the upper thigh. SI-targeted injection confirms diagnosis.

7. Sciatica

Sciatica is a pattern — leg pain following the sciatic nerve distribution — not a single diagnosis. The cause is usually disc herniation or foraminal stenosis. Treatment targets the underlying lesion.

8. Annular tears

Tears in the disc’s outer ring produce axial low back pain and are confirmed on high-resolution MRI. Annular tears are the lesion biologic disc repair specifically addresses, sealing the defect with FDA-approved fibrin sealant under fluoroscopic guidance.

9. Foraminal stenosis

Narrowing of the bony opening where the nerve root exits the spine. Symptoms mirror disc herniation — dermatomal leg pain — but the lesion is bony, not disc-based. Treatment paths differ accordingly.

10. Lumbar muscle strain

Soft-tissue injury that resolves with rest and graded loading inside 6 to 8 weeks. Persistent pain beyond that window warrants imaging to rule out a structural driver underneath the strain.

Frequently Asked Questions

Can I have more than one of these at the same time?

Yes. Layered conditions are common. Disc herniation paired with facet arthropathy is a frequent combination. Each driver gets evaluated separately.

Which condition causes leg pain versus back pain?

Leg pain frequently points to nerve-root compression — disc herniation, stenosis, or foraminal narrowing. Back-dominant pain points to disc, facet, or SI joint sources.

Are these conditions reversible?

Some respond fully to conservative care or biologic disc repair. Others are structural and require procedural management. Reversibility depends on the lesion.

How is the diagnosis made?

Imaging (MRI or CT) plus a focused physical exam plus a documented pain pattern. None of those three is enough alone.

What if my imaging shows multiple conditions?

The clinical task is identifying which condition is the pain generator. Imaging findings without matching pattern are not the driver.

Sources & Further Reading

Next Steps

Lumbar conditions span a wide range — from mild disc bulges to severe stenosis. The right path rests on imaging, exam, and pain pattern. The Valor team reads the imaging and recommends a path that fits the specific case, including referral to care we do not provide when that is the better match. Schedule a consultation to discuss your case.

This content is for general informational purposes only and does not constitute medical advice, diagnosis, or treatment. It is not a substitute for evaluation by a qualified physician. Treatment decisions depend on individual medical history and clinical findings.

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