Spinal stenosis

Overview

Spinal stenosis is a narrowing of the spaces within your spine. This narrowing can put pressure on the nerves that travel through the spine, causing pain, numbness, or weakness. It most often happens in the lower back (lumbar spine) or the neck (cervical spine).

Yes, it becomes more common as people get older. About 1 in 20 people over the age of 50 may have some degree of spinal stenosis, though many do not have symptoms.

Spinal stenosis most often affects adults over the age of 50. It can also affect younger people who are born with a narrow spinal canal or who have had a spine injury.

Symptoms

Common symptoms

• Pain or cramping in the lower back, legs, or buttocks that gets worse when standing or walking and improves when sitting or leaning forward.
• Numbness or tingling in the legs or feet.
• Weakness in the legs or arms (depending on where the narrowing is).
• In the neck, symptoms may include neck pain, numbness in the arm or hand, or trouble with balance.

Symptoms in children

• Children are rarely affected, but if they are, symptoms may include back pain, leg pain, or weakness that gets worse with activity and improves with rest.
• Some children may have a condition called congenital spinal stenosis, which can cause symptoms without a known cause.

Symptoms in older adults

• Symptoms are more common and often more noticeable in older adults.
• Walking short distances may cause pain or heaviness in the legs, but sitting down or bending forward often provides relief.
• Some older adults may have trouble with balance or coordination.

Causes

Main causes

• Age-related changes: As you get older, the discs in your spine can dry out and bulge, the ligaments can thicken, and bone spurs can form, all of which can narrow the spinal canal.
• Herniated discs: When the soft material inside a disc pushes out, it can press on the spinal cord or nerves.
• Spinal injuries: Accidents or trauma can cause fractures or dislocations that narrow the canal.
• Tumors or growths: Very rarely, abnormal growths inside the spine can cause narrowing.

Risk factors

• Age over 50.
• Being born with a naturally narrow spinal canal.
• Repeated heavy lifting or jobs that involve a lot of bending and twisting.
• Previous spine injury or surgery.
• Certain conditions like osteoarthritis or scoliosis.

When to see a doctor

See a doctor urgently if:

• If you have sudden loss of bladder or bowel control.
• If you have severe leg weakness that comes on quickly.
• If you have numbness in the saddle area (the area that would touch a saddle when riding a bike).

Book a routine appointment if:

• If you have back or leg pain that does not improve with rest or over-the-counter pain relief after a few weeks.
• If you notice numbness, tingling, or weakness that is gradually getting worse.
• If your symptoms interfere with your daily activities, such as walking or climbing stairs.

Diagnosis

Your doctor will start with a detailed history and a physical exam. They may check your strength, reflexes, and feeling in your legs and arms. They will also ask about your symptoms and what makes them better or worse.

Tests that may be done

• X-rays: These can show bone spurs or other changes in the spine.
• MRI (magnetic resonance imaging): This is the best test to see the spinal cord, nerves, and soft tissues. It can show how much narrowing is present.
• CT scan: Sometimes used to get a detailed look at the bone structure.
• Nerve conduction studies: These tests check how well your nerves are working.

What to expect at your appointment

Your doctor will explain the results and what they mean for you. Not everyone with narrowing needs treatment — it depends on your symptoms. You may be referred to a specialist, such as a rheumatologist, neurologist, or orthopedic surgeon.

Treatment

Treatment for spinal stenosis aims to relieve symptoms and help you stay active. Most people start with simple, non-invasive approaches. Surgery is reserved for when symptoms are severe or do not improve with other treatments.

Self-care at home

• Rest when symptoms flare up, but try to stay active between episodes.
• Use over-the-counter pain relievers (like paracetamol or ibuprofen) as directed. Talk to your pharmacist or doctor first.
• Apply heat or cold packs to sore areas — try what feels best for you.
• Practice good posture and avoid activities that make symptoms worse, like prolonged standing or heavy lifting.
• Consider using a walking aid (like a walker) to help you lean forward slightly, which opens up the spinal canal.

Medical treatments

Your doctor may recommend physical therapy to strengthen the muscles that support your spine. They might also suggest prescription pain medicines or nerve pain medicines (but always take as prescribed). Some people benefit from epidural steroid injections (a shot of steroid medicine near the spine) to reduce swelling and pain. These treatments are not a cure, but they can help manage symptoms for weeks to months.

When is surgery considered?

Surgery may be an option if your symptoms are severe, getting worse, or not responding to other treatments. The most common surgery is called a decompression (laminectomy), where the surgeon removes a small part of the bone or ligament to create more space for the nerves. Surgery is not right for everyone, so your doctor will discuss the risks and benefits with you.

Living with this condition

Living with spinal stenosis means learning what triggers your symptoms and finding ways to avoid them. Many people find that sitting or leaning forward helps — for example, use a shopping cart or a walker when walking. Plan rest breaks during activities like grocery shopping or sightseeing.

Lifestyle tips

• Stay as active as possible within your comfort level. Walking, swimming, and cycling on a recumbent bike (where you sit with your legs out in front) are often well-tolerated.
• Avoid high-impact activities like running or jumping.
• Lose weight if you are overweight — this reduces pressure on your spine.
• Use proper body mechanics when lifting: bend your knees, not your back.

Diet and exercise

A healthy diet rich in calcium and vitamin D supports bone health. Aim for a balanced diet with plenty of fruits, vegetables, lean proteins, and whole grains. Exercises that strengthen your core (belly and back muscles) can help stabilize your spine. Gentle stretching, yoga (avoid deep back bends), and Pilates may also help, but check with a physical therapist first.

Mental health and emotional wellbeing

Living with chronic pain can be frustrating and can lead to anxiety or depression. It is normal to feel down at times. Talking to a counsellor or joining a support group can help. Remember that your symptoms do not define you, and many people manage well with the right strategies.

Prevention

You cannot fully prevent the age-related changes that cause spinal stenosis, but you can reduce your risk by staying active, maintaining a healthy weight, practicing good posture, and avoiding activities that strain your back. Strengthening your core muscles may help support your spine.

Complications

If left untreated

• Chronic pain that limits your ability to walk or do daily activities.
• Permanent nerve damage leading to ongoing numbness or weakness.
• Rarely, cauda equina syndrome (a medical emergency) where the nerves at the bottom of the spinal cord are severely compressed, causing bladder/bowel problems.

Long-term outlook

For most people, spinal stenosis is a condition that can be managed well with lifestyle changes, physical therapy, and sometimes medications. Many people remain active and do not need surgery. Even if symptoms are more severe, treatments are available to improve your quality of life. The outlook is generally positive with proper care.

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