Another cause is spondylolisthesis where a lumbar vertebrae is displaced.

另一个可能的原因是腰椎滑脱，即腰椎的骨折错位。

Bilateral sciatica, where both legs are affected, can occur with central disc herniated, lumbar stenosis or spondylolisthesis.

双侧的坐骨神经痛，可发生于中央型椎间盘突出、腰椎管狭窄、脊椎滑脱。

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。

Spondylolisthesis is a condition where one vertebra slips or becomes displaced, due to a trauma, surgery or degenerative spinal disease, and presses on the nearby nerve roots.

脊椎滑脱是指椎骨的滑动或移位，通常由于外伤、手术或退行性脊柱疾病；脊椎滑脱会进而压迫附近的神经根。