These nerves travel to the area in front of the sacrum, and join to make the sacral plexus.

这些神经走行至骶骨前面，连接形成骶神经丛。

Dermatomes of the spinal nerves of the sacral plexus cover almost the entire surface of the thigh, leg, and foot.

骶神经丛的脊神经的皮节包括几乎整个大腿、小腿和足的表面。

It is caused by irritation or damage to the sciatic nerve and spinal nerve roots of sacral plexus, most commonly, as a result of disc herniation.

它是由于坐骨神经或骶神经丛的脊神经根受到刺激或损伤引起的，最常见的病因是继发于椎间盘突出。