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Cardiopulmonary

Spinal Stenosis: Narrowing of the Spinal Canal

August 13, 2026 · 3 min read

Spinal Stenosis: Narrowing of the Spinal Canal

You’re in the middle of a re-evaluation with a 72-year-old patient who reports that standing and walking have become a chore. Their words: “The only way I can get through the grocery store is to lean on the cart.” This is a classic presentation that should immediately point you toward spinal stenosis.

What is Spinal Stenosis?

Spinal stenosis is a condition characterized by a narrowing of the spinal canal or nerve root foramina. This narrowing creates compression on the spinal cord and/or nerve roots. In the lumbar spine, it’s most commonly an acquired degenerative process involving hypertrophy of the ligamentum flavum, facet joint arthropathy, and disc bulging. This results in a reduction of space for the neural elements, leading to neurogenic claudication.

Why Spinal Stenosis Matters in Physical Therapy Practice

This condition is a major driver of disability in the older adult population. It directly impacts functional mobility, balance, and community ambulation. As a PT, your role is critical in managing symptoms and improving quality of life. The Plan of Care (POC) hinges on patient education about symptom management and a carefully dosed exercise program to improve spinal and hip mobility without exacerbating symptoms.

What You’ll See in the Clinic

Patients typically present with bilateral or unilateral buttock, thigh, and leg pain that is provoked by lumbar extension and prolonged standing or walking. The pain is often described as a heavy, aching, or burning sensation that eases with sitting or leaning forward. In the clinic, you’ll see these patients exhibit a forward-flexed posture, and they may have difficulty with balance during gait.

“Mr. J presents with symptoms of neurogenic claudication. Reports ability to walk only 2 blocks before needing to sit. Symptoms reproduce with 30 seconds of standing lumbar extension. Gait is guarded with decreased stride length. Plan: Initiate flexion-based exercises, bike warm-up, and education on using a shopping cart for community ambulation.”

Common Pitfall & Pro Tip

⚠️ Pitfall: Confusing neurogenic claudication with vascular claudication. A key differentiator is that vascular claudication is relieved by standing still, while neurogenic claudication requires spinal flexion (sitting or leaning forward) to relieve symptoms. Failing to ask this question can lead you down the wrong treatment path.

💡 Pro Tip: The “Shopping Cart Sign” is your best friend. If leaning on a shopping cart relieves their pain, it’s a strong indicator of lumbar stenosis. Use this as a functional test and a patient education tool. It’s a simple, relatable example of the “flexion-relief” phenomenon.

Memory Aid for Spinal Stenosis

Remember the three F’s of relief: Flexion, Forward, and Feeling better. The canal widens in flexion, which is why patients instinctively bend forward. This biomechanical correlation makes it easy to predict their postural preferences and guide your exercise selection.

NPTE Connection

Expect questions on spinal stenosis to focus on the differential diagnosis between neurogenic and vascular claudication, as well as identifying positions that ease or worsen symptoms. The NPTE loves to test red flags and clinical reasoning.

Related Physical Therapy Concepts

Understanding spinal stenosis naturally connects to Lumbar Radiculopathy (which can present similarly but is often unilateral), Hip Osteoarthritis (which can cause co-existing gait impairments), and Postural Syndrome (where stretching tight hip flexors can worsen a patient’s ability to stand tall). You’ll also need to be aware of Central Cord Syndrome in the cervical spine, which has a similar pathology of compression but with different clinical signs.

Quick Reference

✓ Positive test criteria: Symptoms reproduced in extension, relieved in flexion ✓ Priority level: High – Impacts functional mobility and safety ✓ PT Interventions/Considerations: • Flexion-based exercise program (e.g., cycling, lumbar flexion stretches) • Manual therapy to improve hip flexion and thoracic mobility • Grade 1-2 mobilizations to the lumbar spine in flexion • Gait training with an assistive device for balance • Education on activity modification and energy conservation

Bottom line: For spinal stenosis, think “flexion is the fixer.” Your clinical exam should always include a postural assessment to confirm this pattern, as it will be your guide to a successful Plan of Care.