Each nerve leaves the spinal canal through the corresponding intervertebral foramen, which are openings between two adjacent vertebrae.

所有神经均通过相应的椎间孔离开椎管；椎间孔开口于两块相邻椎体之间。

The most common type of lumbar spondylolisthesis is anterolisthesis, where a vertebra moves forward and narrows the spinal canal, causing compression of the nerves.

腰椎滑脱最常见的类型是向前滑脱，即椎骨相对向前移动并使椎管变窄，从而压迫神经。

It's formed by the spinal nerves L4, L5 and S1, 2 and 3, which leave the spinal canal through the intervertebral foramen, an opening located between the vertebrae and behind intervertebral discs.

它是由脊神经腰4（L4）、腰5（L5）、骶1（S1）、骶2（S2）和骶3（S3）组成；这些神经通过椎间孔离开椎管；椎间孔为椎骨之间、椎间盘后方的椎管的开口。