The term spondylolisthesis is derived from the combined Greek terms spondylos (vertebra), and listhesis (to slip). The term literally means the “slippage of one vertebra forward in relation to the adjacent vertebra.
Five types were classified according to the Wiltse classification system 1):
Surgery is indicated if symptoms are disabling and interfere with work, if the condition is progressive, or if there is a significant neurological deficit. The ideal surgical treatment remains controversial 2).
Lumbar fusion for spondylolisthesis tends to yield more consistent outcomes than fusion for degenerative disk disease and discogenic low back pain.
posterior lumbar interbody fusion