Joints are really important for how our skeleton is built and how it works.

1. Types of Joints:
In our bodies, we have more than 230 joints. They can be divided into three main types:

• Fibrous Joints: These are like the ones in our skull that fit together tightly.
• Cartilaginous Joints: These include the discs in our spine that help cushion our bones.
• Synovial Joints: These are the joints that allow a lot of movement, like our knees and elbows.

2. Functionality:
Joints help us move. They let us bend and straighten our arms and legs.
About 80% of how we move our joints comes from synovial joints. They can move freely because they have a special fluid called synovial fluid that keeps them slippery.

3. Stability and Support:
Joints help keep our skeleton strong and stable. Ligaments, which are bands of tissue, support our joints.
It’s really important for joints to work well. In fact, around 25% of injuries in athletes happen to their ligaments and joints.