Only the median nerve goes through the carpal tunnel.

只有正中神经穿过腕管。

This leads to dysfunction of the median and ulnar nerves since they contain fibers from these roots.

这会造成正中与尺神经功能障碍，因为这两条神经含有来自C8、T1神经根的神经纤维。

Basically, in a nutshell, any structure innervated by the median nerve downstream of the point of compression can be affected.

简言之，只要是正中神经延伸的分支受到卡压，其支配的组织结构就会受影响。

So carpal tunnel's when there's compression of the median nerve here in your wrist, which is where the carpal tunnel is.

腕管是指手腕正中神经受压，腕管就在这里。

This happens because those muscles are innervated by the recurrent branch, the median nerve, which arises from the median nerve after it passes through the carpal tunnel.

这是因为这些肌肉是由正中神经穿过腕管后的分支所支配的。

Interestingly, a superficial sensory branch of the median nerve, called the Palmar branch, provides sensation to the central base of the palm.

有趣的是，属于正中神经浅表感觉的分支，即手掌分支，依然会提供手掌中心的感觉。

So when the median nerve is damaged, the forearm stays supinated meaning that the palm of the hand faces anteriorly.

因此，当正中神经受损时，前臂保持旋后位，即手掌心朝向前方。

On the other hand, the median nerve innervates pronator teres and pronator quadratus, which pronate the forearm turning the palm posteriorly.

另一方面，正中神经支配旋前圆肌与旋前方肌，使前臂旋前，掌心向后旋转。

Now moving on to the hand, the median nerve innervates the thenar muscles which control the movements of the thumb, so thumb movements are limited.

现在看看对手部的影响，正中神经支配大鱼际肌，控制大拇指运动，因此正中神经受损时，拇指运动受限。

When the ulnar and median nerves get damaged, muscles in the forearm override the action of the lumbricals, causing the hand to look like a claw.

当尺神经与正中神经受损时，前臂肌群的作用强于蚓状肌，造成手部呈爪型。

The skin of the hand served by the median nerve includes the thumb, the index finger, the middle finger, as well as half of the ring finger, that's on the thumb side.

正中神经的皮肤支配区为拇指、食指、中指，还有环指的桡侧半。

This compression typically causes pain, numbness and tingling in the thumb, index finger, middle finger, and thumb side of the ring finger, which are the areas of skin innervated by the median nerve.

这种卡压的典型症状是疼痛及拇指、示指、中指和环指桡侧半感到麻木和刺痛；这些位置是正中神经皮肤支配区。

Also, there are nine flexor tendons which go to the fingers and the thumb as well as one nerve, the median nerve, which travels down the forearm and goes through the carpal tunnel.

管内还有9条屈肌肌腱与一条神经（正中神经）穿过，延伸到各个手指；正中神经从前臂发出经过腕管。

Finally, both the ulnar and median nerves innervate the lumbricals, which are 4 muscles that extend the fingers at the interphalangeal joints, and keep them flexed at the metacarpal phalangeal joints.

最后，尺神经和正中神经都支配蚓状肌，这四条蚓状肌能使指间关节的手指伸直，同时掌指关节保持屈曲位。

Another physical test, Tinel's sign is performed by tapping the transverse carpal ligament which reproduces the symptoms of tingling or feelings of pins-and-needles in areas of the hand served by the median nerve.

另一个测试是Tinel征，通过敲击腕横韧带，（患者）由正中神经支配的手部区域会出现针刺的症状或针刺的症状。

Damage to the median nerves could result in numbness in the thumb, the index finger, and middle finger as well as half of the ring finger that's on the thumb side.

正中神经受损可能会导致拇指、示指、中指及半侧无名指（拇指侧）的麻痹。

Other risk factors of carpal tunnel syndrome include obesity or pregnancy, as well as having underlying conditions like rheumatoid arthritis where there's joint inflammation from an autoimmune process, that leads to the compression of the median nerve.

腕管综合征的其他危险因素还包括肥胖和怀孕，和一些潜在的症状如类风湿性关节炎（一种由免疫反应导致的关节炎症，也会引起正中神经卡压）。