Types of Joints and Their Movements
Let's dive into the fascinating world of joints and explore how they enable different types of movement in our bodies. Understanding joints is crucial for anyone interested in sports science, as they're fundamental to human movement and athletic performance.
Three Main Types of Joints
1. Fibrous Joints
- Virtually immovable joints
- Connected by dense fibrous connective tissue
- Provide stability rather than mobility
The sutures in your skull are perfect examples of fibrous joints. These zigzag lines where skull bones meet allow for minimal movement during birth but become completely fixed in adulthood.
2. Cartilaginous Joints
- Slightly movable joints
- Connected by cartilage
- Allow limited movement
Two subtypes:
- Synchondrosis: Temporary cartilaginous joints
- Symphysis: Permanent cartilaginous joints
The joint between your ribs and sternum is a cartilaginous joint, allowing slight movement during breathing. The pubic symphysis is another example, providing stability while allowing minimal movement.
3. Synovial Joints
- Freely movable joints
- Most common type in the body
- Contain synovial fluid for lubrication
