To evaluate whether the severe back pain located in the lumbar spine is axial pain or radicular pain, the patient should be asked to perform the Valsalva maneuver.
Lumbar spine is the lower back region of the backbone. Lumbar are actually the vertebrae of the the spine which are 5 in number. These vertebrae consist of spinal cord tissue and nerves that are supposed to control communication between the brain and the legs.
Valsalva maneuver is a technique applied for various purposes. It is the forceful exhalation of air. It is done by closing the mouth and pinching the nose shut while expelling air. It is done to unclog the closed ear, restore heart rhythm or diagnose an autonomic nervous system disorder.
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