You could avulse a nerve root and cause paralysis.

你会撕脱脊根 然后导致瘫痪。

You can see them compressing at the L4 nerve root.

你可以看到它们正挤压第4腰椎上的脊根。

Did you cut the nerve root?

你切断了根吗？

This stretches the nerve roots over the herniated disk or the object causing compression.

这可将根拉伸到可能的椎间盘突出或造成压迫的部位。

If the S2 nerve root is compressed, the pain would mostly be felt along the back of the leg.

如S2根受压，疼痛则主要在小腿后部。

Now, at the first thoracic nerve root or T1, you've got sympathetic nerves that supply the head, neck and eyes.

同时，交感纤维，从第一胸髓根或T1发出，支配你的头、颈和。

Finally the first thoracic nerve root or T1 provides sympathetic innervation for the head, neck, and eyes.

最后，第一条胸根（T1）含有交感，支配头部、颈部与。

So you don't feel the pain anymore because there's no nerve root there.

所以你不再感到疼痛，因为那里没有根。

So you go to the dentist and they pull the nerve root out of that tooth.

所以你去看牙医，他们把那颗牙的根拔了出来。

With no blood supply and no nerve root, that's a dead tissue.

没有血液供应和根，那就是坏死的组织。

We know exactly the nerve roots that are deficit because I know exactly what serves those muscles that have wasted.

我们确切知道哪些根存在缺陷，因为我清楚地知道哪些负责那些已萎缩的肌肉。

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.

它是由于坐骨或骶丛的脊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。

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根。

Below the knee, the pain usually follows the dermatome distribution, for example, if the L4 nerve root is compressed, the pain would radiate along side the medial side of the leg.

在膝盖以下，疼痛通常遵循皮节分布：像是如L4根受压，疼痛会沿着小腿的内侧放射。

Well, you see, this prolapse was so delicate, I could practically see myself pulling it out of the nerve root canal before she entered the consultation room.

嗯，你看，这个脱垂太微妙了，我几乎可以看到自己在她进入咨询室之前把它从根管中拉出来。

If it bulges out towards the center of the spinal cord, it could compress multiple nerve roots on both sides, or laterally, compressing one nerve root on one side.

如它是向脊髓中心突出，则可能压迫两侧的多个根或仅压迫一侧的单一根。

Klumpke's Palsy occurs when there's a disruption of the innervation to the muscles of the hand caused by an injury to the nerve roots C8 or T1 or to the lower trunk of the brachial plexus.

当支配手部肌肉的C8、T1根或臂丛下干受损时，就会发生Klumpke麻痹。

(Laughter) Then you bring in the microscope, and you carefully remove the disc and the prolapse in the nerve root canal, without damaging the cord and the nerve root lying only millimeters underneath.

（笑声）然后你拿起显微镜，小心地取出椎间盘和根管中的脱垂， 而不会损坏脊髓和根， 根位于下面只有几毫米。

If I move the nerve, so if I extend their leg at the same time, ask them to look up, it releases the whole, spinal cord and all the nerve roots from above and it pulls it from below.

如我移动，比如同时伸展他们的腿并让他们抬头，这会从上方释放整个脊髓及所有根，并从下方将其拉出。