What defines spondylolisthesis?

Spondylolisthesis is defined specifically by the forward translation of one vertebra relative to another. This condition typically occurs in the lumbar spine and can result from various factors, including congenital defects, degenerative changes, trauma, or conditions causing instability in the spinal structures.

In this condition, the vertebrate upper section slides forward out of alignment with the vertebra below it. This translational movement can lead to various symptoms, such as lower back pain, nerve root compression, or radiculopathy, depending on the severity and degree of slippage. Understanding this forward displacement is crucial, as it lays the groundwork for diagnosis, management, and treatment options for individuals experiencing spondylolisthesis.

The incorrect choices involve back translation and other movements of the vertebrae that do not reflect the primary characteristic of spondylolisthesis.