| SPI | an anesthetic that is injected into the spine |
|---|---|
| SPI | the canal in successive vertebrae through which the spinal cord passes |
| SPI | the series of vertebrae forming the axis of the skeleton and protecting the spinal cord |
| SPI | a major part of the central nervous system which conducts sensory and motor nerve impulses to and from the brain |
| SPI | an abnormal curvature of the vertebral column |
| SPI | clear liquid produced in the ventricles of the brain |
| SPI | correction of an unstable part of the spine by joining two or more vertebrae |
| SPI | any of the 31 pairs of nerves emerging from each side of the spinal cord (each attached to the cord by two roots: ventral and dorsal) |
| SPI | removal by centesis of fluid from the subarachnoid space of the lumbar region of the spinal cord for diagnostic or therapeutic purposes |
| SPI | removal by centesis of fluid from the subarachnoid space of the lumbar region of the spinal cord for diagnostic or therapeutic purposes |
| SPI | veins that drain the spinal cord |
| SPI | in the spine |