Question

how can neurogenic claudication be distinguished from vascular claudication in a patient with leg pain during walking?
neurogenic claudication causes unilateral leg pain, while vascular claudication is bilateral.
neurogenic claudication is relieved by standing still, while vascular claudication requires sitting.
the bicycle test relieves neurogenic claudication due to lumbar spine flexion, while vascular claudication persists.
vascular claudication causes sensory loss, while neurogenic claudication does not.

Explanation:

Neurogenic claudication is often relieved during activities that flex the lumbar spine like the bicycle - riding position which flexes the spine, while vascular claudication is due to poor blood - flow and is not relieved by lumbar spine flexion. Unilateral or bilateral pain is not a definitive differentiator. Standing still does not relieve neurogenic claudication and sitting is not the key differentiator for vascular claudication. Sensory loss can occur in both.

Answer:

C. The bicycle test relieves neurogenic claudication due to lumbar spine flexion, while vascular claudication persists.