I have been looking at spinal strokes and found this:

Frequency United States Spinal cord infarction is not common, but only fragmentary or indirect data are available on incidence or prevalence. A large study showed that only 9 of 3784 autopsies revealed spinal cord infarction, with a rate of occurrence of 0.23% at death. Conversely, if spinal stroke is approximately 1.2% of strokes, an overall annual incidence of 12 in 100,000 can be estimated.


Mortality/Morbidity The risk to life and its quality from spinal cord infarction is substantial because of the disability, which can be severe, with paraplegia, risk of pulmonary emboli, and risk of infection (eg, bladder, lungs, decubiti). However, no epidemiologic studies are available because of the relatively small number of patients affected. Published series of reports of spinal cord infarction are relatively small ranging up to 36-44 patients. They find a mortality in the vicinity of 20-25% of patients admitted to hospital with spinal cord infarction (Cheshire, 1996; de la Barrera, 2001).


Physical Neurologic dysfunction usually (ie, in approximately 95% of reported cases) stems from a lesion located in the anterior two thirds (or in the central "watershed") of the spinal cord (Found this interesting) and spares vibration and position sense perception, which are carried by the posterior columns and are relatively spared. See Image 2 for sensory pathways in the spinal cord and Image 3 for vascular anatomy of the spinal cord in the axial plane.