“…Symptomatic patients most commonly present with headaches; however, dizziness, disequilibrium, neck pain, difficulty sleeping, weakness, numbness in the upper or lower extremities, nausea, and blurred vision may also be present [2] . Cerebellar tonsillar herniation results in aberrant tonsillar pulsatile motion during the cardiac cycle, which interferes with cerebrospinal fluid (CSF) flow at the foramen magnum and causes symptoms [ 3 , 4 ]. Traditional treatment for symptomatic CMI involves posterior fossa decompression, which creates more space for the cerebellum, relieves pressure on the spinal cord, and restores normal CSF flow [5] .…”