Spinal Stenosis

Lumbar spinal stenosis is one of the most common causes of back and leg pain in older adults. It’s typically the leg symptoms that give it away: a heavy, aching or tingling feeling that builds as you stand or walk, forcing you to stop and sit, and then eases. It can be limiting, but most people manage well with conservative care, and there are clear options if you don’t.

Understanding lumbar spinal stenosis

As the spine changes with age, discs lose height and bulge, joints enlarge and ligaments thicken. Together these can narrow the spaces for the spinal nerves in the lower back. Standing and walking tend to narrow the space further because the spine arches backwards, which is why sitting, bending forward and cycling usually feel better.

Importantly, narrowing is common even in people with no symptoms, so diagnosis relies on matching your symptoms and examination to the imaging, rather than the scan alone.

Symptoms we commonly see

• Aching, cramping, heaviness or tiredness in the buttocks and legs when standing or walking
• Pins and needles or numbness in the legs or feet
• Relief on sitting, leaning forward or bending, such as over a shopping trolley
• Reduced walking distance, with the need to stop and rest
• Lower back pain, though sometimes it’s mild or absent
• Weakness or a sense of the legs giving way in more advanced cases

Our evidence-based approach

Most people with lumbar spinal stenosis are treated without surgery. Non-surgical options include activity modification, physiotherapy and medication, although few high-quality trials have compared them, and reviews have not found enough evidence to recommend any single approach over others. Our approach is to tailor care to your symptoms and goals:

1. Assessment of your back, hips, legs and nerves, including walking tolerance, to confirm the pattern and screen for warning signs
2. Education about the condition and its outlook, so a scan result doesn’t drive fear or inactivity
3. Activity advice, including pacing and positions that ease symptoms, so you can stay active
4. Progressive walking and aerobic training, building your tolerance, with options like cycling when walking is limited
5. Strengthening of the legs, hips and trunk, to improve how your body copes with load
6. Hands-on treatment or dry needling where it eases pain and helps you move
7. Clear guidance on injections and surgery, and timely referral if your symptoms, strength or function aren’t improving

See our lower back pain and sciatica pages for other causes of back and leg pain.

What to expect: recovery timeline

• First six to twelve weeks: many people improve their walking tolerance and comfort with consistent exercise and activity changes
• Ongoing: spinal stenosis is a long-term condition, so the aim is sustainable habits that keep you moving
• If limited: persistent, disabling symptoms are a reason to discuss specialist review with your GP

When to seek help urgently

Go to an emergency department straight away if you have new loss of bladder or bowel control, numbness around the groin or inner thighs, or rapidly worsening weakness in your legs. These can indicate cauda equina syndrome and need urgent care. Also seek prompt review for a foot that’s dragging, leg weakness that’s getting worse, or back pain with fever or feeling unwell.

References

• Katz JN, Zimmerman ZE, Mass H, Makhni MC. Diagnosis and management of lumbar spinal stenosis: a review. JAMA. 2022;327(17):1688-1699.
• Lurie J, Tomkins-Lane C. Management of lumbar spinal stenosis. BMJ. 2016;352:h6234.
• Zaina F, Tomkins-Lane C, Carragee E, Negrini S. Surgical versus non-surgical treatment for lumbar spinal stenosis. Cochrane Database Syst Rev. 2016;(1):CD010264.