Glossary

Selective Dorsal Rhizotomy – a surgical procedure where a portion of the sensory nerves (dorsal) are cut (rhizotomy). The selective refers to the fact the there is a selection process to determine which of the nerve fibers are cut and which are preserved.

Subependymal giant cell astrocytoma

Subependymal giant cell astrocytomas

Subependymal nodules – seen in patients with tuberous sclerosis

Subependymal Nodules

Sensory Evoked Potential

Sensory Evoked Potentials

Subependymal giant cell tumors – term used by some in place of SEGA (subependymal giant cell astrocytoma) to describe tumors arising in subependymal tissue around the foramen of Monro in children with tuberous sclerosis. The rationale for its use is the finding of cell types other than astrocytomas in the tumor.

refers to a force whose vector is parallel to the cross section of a structure. In the spine this would be a force that is parallel to a joints cross section that acts to encourage a dislocation of the joint.

The short sit position is position assumed when sitting in a chair or on a stool with hip and knee joints at 90 degrees and feet flat on the floor.