Lumbar spinal stenosis is a narrowing of the spinal canal or the openings where nerves exit the spine, usually from age-related bone spurs, thickened ligaments, and disc changes. It becomes symptomatic when the narrowing compresses nerve tissue during certain positions.
The classic pattern — neurogenic claudication
- Leg pain, heaviness, or numbness that comes on with walking or standing
- Relieved by sitting or bending forward (shopping cart sign)
- Distance to symptom onset gets progressively shorter over months to years
- Balance issues sometimes accompany it
This "shopping cart sign" — leaning forward on a cart at the grocery store to walk further without symptoms — is highly suggestive of lumbar stenosis.
How it differs from vascular claudication
Vascular claudication (from peripheral artery disease) also causes leg pain with walking, but it usually resolves quickly with just standing still — no need to sit or bend forward. Vascular workup is important when the pattern is ambiguous.
Conservative management (works for most)
Flexion-based exercises — knees to chest, cat-cow, seated stretches. These open up the stenotic spaces.
Core stability — reduces shear and load through the affected segments.
Hip mobility — tight hip flexors worsen extension load on the low back.
Manual therapy and gentle traction for pain modulation and mobility.
Walking program — often better tolerated on an incline treadmill (walking uphill puts you in slight flexion). Progressive distance-building.
Modality support — acupuncture, class IV laser, and TECAR for symptom management.
When surgery gets discussed
Progressive functional decline, bowel/bladder changes, significant leg weakness, or failure of comprehensive conservative care over 6-12 months. Decompression surgery has good outcomes for well-selected patients, but most people don't reach that threshold.
If your walking distance has been shrinking and you catch yourself leaning on carts, come in for an assessment. There's a lot we can do to keep you mobile.