Spinal claudication refers to exertion-dependent pain radiating into the legs, which is typical of lumbar Spinal canal stenosis.
Etiology
Spinal claudication due to spinal canal stenosis is fundamentally caused by a mismatch between the neural and vascular structures and the available space within the lumbar spinal canal. The main cause is degenerative changes in the lumbar spine[^1].
Symptoms
In spinal claudication, unilateral or bilateral pain occurs after walking a certain distance. The pain characteristically radiates from the buttocks into the posterior thighs and lateral lower legs and occasionally extends to the feet and toes. The symptoms may occur either unilaterally or bilaterally, but are more commonly bilateral. Depending on the location of the stenosis, the symptoms do not necessarily have to be symmetrical and may affect the entire extremity or only part of it[^1]. In a flattened lumbar lordosis posture, such as when walking uphill or stooped, the pain symptoms resolve.
Vascular claudication differs in that pedal pulses are often absent. In vascular claudication, or Intermittent claudication, symptoms also improve regardless of posture or position[^2].