Structurally speaking, you've got fibrous, cartilaginous, and synovial joints.

从结构上来说，你有纤维关节、软骨关节和滑膜关节。

These joints are synovial, meaning they have a joint capsule and a small amount of synovial fluid in between.

关节突关节是滑膜关节，即关节有关节囊，囊内有少量滑液。

Well done! And synovial is the name for the fluid that surrounds this type of joint.

干得好！滑液是围绕在这类关节周围的液体。

With Osteoarthritis, we're really talking about one particular kind of joint which is a synovial joint.

骨关节炎中，我们讨论的是一种特殊的关节——滑膜关节。

OK, this professor isn't feeling too clever today. I'm going to have to take a guess and say, c) synovial.

好吧，我这个教授今天的大脑不是很灵光。我只能猜一下答案了，我选c)滑液性关节?

Yes, of course. So which type of joint can you crack? Is it … a) fibrous? b) cartilaginous? Or c) synovial?

当然。那么你能掰响哪一种关节？是a)纤维性关节? b)软骨性关节? c)滑液性关节?

The cartilage gets softer, weaker, and continues to lose elasticity, and starts to flake off into the synovial space, called joint mice.

软骨变得柔软、脆弱，弹力持续降低，开始脱落，进入滑膜囊内，称为“关节鼠”。

They started each session collecting a blood sample, and a bit of synovial fluid, the natural lubricant inside the knee joint.

他们在每次训练开始时采集血样和少量滑液，滑液是膝关节内的天然润滑剂。

The cool thing about these cavities is that they contain a bit of viscous, egg-white-like synovial fluid that acts like grease on a hinge.

这些空腔最酷的一点是它们含有一点粘性的、蛋清状的滑液，就像铰链上的油脂一样。

But the family of joints that make all the sports, and the entire art of breakdancing, and yoga possible, are the freely movable synovial joints.

但是关节家族中使所有的运动，霹雳舞和瑜伽的整个艺术成为可能的是可自由移动的滑膜关节。