AP: anteroposterior; CT: computed tomography; MRI: magnetic resonance imaging.
* These symptoms may include limb weakness/numbness, impaired gait, bowel or bladder dysfunction, imbalance, dizziness, syncope, vertigo, "drop attacks," diplopia, dysphagia, or cranial nerve deficits.
¶ Space available for the spinal cord is calculated by subtracting the sagittal diameter of the spinal cord from the sagittal diameter of the spinal canal.