structure of synovial joint
A Synovial joint, also known as a diarthrosis, is the most common and most movable type of joint in the body of a mammal.
The movements possible with synovial joints are:
- Abduction: movement away from the mid-line of the body
- Adduction: movement toward the mid-line of the body
- Extension: straightening limbs at a joint
- Flexion: bending the limbs at a joint
- Rotation: a circular movement around a fixed point