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。

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。

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。

These freely moveable synovial joints come in six different configurations that together allow pretty much any movement your body can make, from a subtle head nod to a vigorous jumping jack.

这些可自由移动的滑膜关节有六种不同的配置，它们一起让你的身体得以做几乎任何运动，从轻轻的点头到有力的开合跳。

Along with articular cartilage, another important component of synovial joints, and where they get their name from, is the synovium, which along with the surface of the articular cartilage, forms the inner lining of the joint space.

和关节软骨一样，滑膜是滑膜关节的另一重要组成成分，所以得名“滑膜关节”；滑膜分布在关节软骨的表面，形成关节腔的内层。