Spinal Stenosis and Physiotherapy: Can It Really Help?

What Is Spinal Stenosis?

Spinal stenosis is a narrowing of the spinal canal or the spaces through which nerve roots pass. In the lumbar spine (lower back), this narrowing places pressure on the nerves, causing pain, numbness, tingling and weakness in the legs, often described as neurogenic claudication.

Classic symptoms include:

• Back and leg pain that worsens with walking and standing
• Relief when sitting down or leaning forward (such as pushing a shopping trolley)
• Numbness, tingling or weakness in one or both legs
• Reduced walking distance over time
• Difficulty with prolonged standing

How Does Physiotherapy Help Spinal Stenosis?

Physiotherapy cannot widen the spinal canal, but a well-designed exercise programme can meaningfully improve symptoms and walking ability. A 2024 systematic review of exercise interventions for lumbar spinal stenosis found that programmes combining lumbar flexion exercises, trunk strengthening, stretching, aerobic fitness work (particularly cycling) and supervision were most consistently associated with successful outcomes, though the authors noted the evidence base is still limited by a small number of studies and considerable variation between trials (Comer et al., 2024).

Improving Spinal Flexion

Spinal flexion (forward bending) opens the spinal canal and reduces nerve compression. Physiotherapy identifies flexion-biased exercises and positions that provide symptom relief and improve walking capacity.

Strengthening Core and Hip Muscles

Stronger core and hip muscles reduce the mechanical demand on the lumbar spine, improving stability and reducing compressive forces on the narrowed canal.

Improving Walking Tolerance

A structured walking programme with specific pacing strategies, posture cues and rest positions can progressively increase walking distance despite stenosis.

Manual Therapy

Soft tissue techniques and gentle joint mobilisation help reduce muscle guarding and improve mobility around the affected spinal segments.

The "Shopping Trolley Sign" and What It Tells Us

Many people with spinal stenosis find that leaning forward, such as when pushing a shopping trolley or leaning on a stick, relieves their leg symptoms. This is because flexion slightly opens the narrowed canal. Understanding this principle allows physiotherapists to prescribe specific postures and exercises that mimic this effect therapeutically.

When Is Surgery Needed?

Surgery is considered for spinal stenosis when conservative management (including physiotherapy) has failed to provide adequate symptom relief, when symptoms are progressively worsening, or when significant neurological deficits are present. A systematic review comparing decompressive surgery with land-based exercise found surgery produced a larger treatment effect overall, but the authors still recommended a supervised exercise programme as a reasonable first step before considering surgery, given the condition's typically slow progression and the risks associated with surgery, such as dural tears (Jarrett et al., PMC3305601, 2012). This is a single, relatively old systematic review with only one direct comparison study, so it should be read as indicative rather than definitive. For most patients, physiotherapy remains a sensible, low-risk first-line approach, with surgery reserved for cases that don't respond.