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Bicycle Test for Spinal Stenosis

In 1977, Dyck and Doyle reported on the bicycle test of van Gelderen. The bicycle test is a simple procedure in which the patient is asked to pedal on a stationary bicycle. If the symptoms are caused by peripheral vascular disease, the patient will experience claudication, a sensation of not getting enough blood to the legs; if the symptoms are caused by lumbar stenosis, symptoms will be relieved when the patient is leaning forward while bicycling. Although diagnostic progress has been made with newer technical advances, the bicycle test remains an inexpensive and easy way to distinguish between claudication caused by vascular disease and spinal stenosis. Dyck and Doyle wrote in their 1977 article: The authors describe a simple clinical adjunct to the routine neurological examination of patients with intermittent cauda equina compression syndrome. The "bicycle test" helps exclude intermittent claudication due to vascular insufficiency and frequently confirms the relationship of posture to radicular pain.