Kidney Stones, also known as renal calculi, are hard masses that separate urine from the urinary tract. These stones can occur anywhere in the urinary tract, including the kidneys, bladder, ureters and urethra.
This fluid is called the cerebrospinal fluid (CSF). When it leaks out, the pressure around the brain and spinal cord drops. Causes of leakage through the dura include: 1  Certain head, brain, or spinal surgeries.  Head injury.
Itâs ironic then that despite their serious outcomes, spinal cord injuries are largely preventable. The following are the five most common causes of spinal cord injuries (SCI) according to the National Spinal Cord Injury Statistical Center: Car Accidents. The very nature of driving makes it the leading cause of SCI.