Lumbar Spinal Stenosis: Symptoms, Causes & PT Treatment
Updated July 20261 minute read
Spinal stenosis is a narrowing of the spaces in your lower spine that can crowd the nerves, causing leg pain, heaviness, or tingling — usually when standing or walking, and relieved by sitting or leaning forward (like on a shopping cart). It's an age-related change, and physical therapy can help you walk farther and stay active. Surgery is considered only when symptoms are severe and don't respond to conservative care.
What is lumbar spinal stenosis?
Stenosis means the canal and openings that house your spinal nerves have narrowed, often from age-related changes to discs, joints, and ligaments. The narrowing can put pressure on nerves, especially in upright positions.
Symptoms
The hallmark is neurogenic claudication — leg pain, cramping, heaviness, or tingling that builds with standing and walking and eases when you sit or bend forward. Symptoms are often in both legs. Many people instinctively lean on a cart and feel better.
What causes it / risk factors
Age is the biggest factor, along with arthritis of the spinal joints, disc changes, and thickened ligaments. It usually develops gradually over years.
How it's diagnosed
A clinician recognizes the pattern from your history and exam; MRI confirms narrowing when treatment decisions require it.
Physical therapy treatment
What a PT does. Your therapist uses positions that open the spinal spaces, builds a walking-tolerance program, and strengthens the core and hips so you stay mobile. Exercises & progression (overview). Flexion-biased exercises, a graded walking or cycling program, and core/hip strengthening. PT helps many people manage stenosis without surgery. Recovery timeline. Stenosis is managed rather than cured; many people improve their walking distance and comfort over 8–12 weeks and maintain it.
Treatment options compared
PT and activity modification are first-line. Injections may help some. Surgery (decompression) is considered for severe, function-limiting symptoms unresponsive to conservative care.
Red flags
Seek urgent care for groin numbness, loss of bladder/bowel control, or rapidly worsening leg weakness.
Frequently asked questions
Sources (3)
This article is for education only and isn't medical advice. Always talk to a licensed clinician about your specific situation.