CSF: cerebrospinal fluid; CT: computed tomography; MRI: magnetic resonance imaging.
* Clinical features of acute lumbosacral radiculopathy include low back pain with radiation to the leg or the groin; corresponding sensory abnormalities, weakness, or bowel/bladder dysfunction may or may not be present.
¶ If a primary neurologic cause is suspected from evaluation of symptoms, exam findings, or clinical course, additional testing may include:
Refer to the UpToDate topic on pathophysiology, clinical features, and diagnosis of acute lumbosacral radiculopathy, sections on evaluation and diagnosis.