Distinguishing Neurogenic Claudication from Lumbar Radiculopathy

Key Distinctions

Neurogenic claudication presents with bilateral leg pain that is provoked by walking or standing and is relieved by sitting or forward spinal flexion, whereas lumbar radiculopathy presents with unilateral dermatomal leg pain, positive nerve‑root tension signs, and specific neurologic deficits in the affected root distribution. 1, 2

Bilateral leg symptoms are characteristic of neurogenic claudication (though unilateral presentation can occur). 1
In neurogenic claudication, pain is provoked by walking or prolonged standing and relieved by sitting or forward flexion of the spine. 1, 2
Unilateral leg pain following a specific dermatomal pattern is typical of lumbar radiculopathy. 1, 2
Radiculopathy pain radiates below the knee in a sciatic‑nerve distribution (sciatica). 1, 2
In radiculopathy, pain may be constant rather than positional. 1

A positive straight‑leg raise test (30–70°) reproduces radicular pain in lumbar radiculopathy. 1
A positive crossed straight‑leg raise is highly specific for radiculopathy. 1
Dermatomal sensory deficits are present in radiculopathy. 1
Weakness of specific muscle groups corresponding to the involved nerve root is observed in radiculopathy. 1
Diminished deep‑tendon reflexes in the distribution of the affected nerve root occur in radiculopathy. 1

Step 1 – Age & Pain Pattern: Any age with unilateral dermatomal pain below the knee suggests radiculopathy. 1
Step 2 – Positional Relief: Pain relieved by sitting or forward flexion supports neurogenic claudication; pain not significantly positional supports radiculopathy. 1
Step 3 – Nerve‑Root Tension Signs: A positive straight‑leg raise (especially crossed) indicates radiculopathy. 1
Step 4 – Neurologic Examination: Presence of specific dermatomal sensory or motor deficits and reflex changes confirms radiculopathy. 1