spinal instability

spi·nal in·sta·bil·i·ty

the inability of the spinal column, under physiologic loading, to maintain its normal configuration; can result from congenital defects, trauma, degenerative change, or neoplastic diseases affecting the vertebrae, intervertebral discs, or spinal ligaments; may lead to damage to the spinal cord or nerve roots or to painful spinal deformity.

spi·nal in·sta·bil·i·ty

(spī'năl in'stă-bil'i-tē) The inability of the spinal column, under physiologic loads, to maintain its normal configuration; may result in damage to the spinal cord or nerve roots or lead to the development of a painful spinal deformity.