Diarthrosen
Diarthroses, also known as synovial joints, are the most common type of joint in the body, characterized by the presence of a joint cavity filled with synovial fluid. This fluid acts as a lubricant, reducing friction between the articulating bones and allowing for smooth, free movement. The articulating surfaces of the bones are covered with articular cartilage, a smooth, elastic tissue that further cushions and protects the ends of the bones.
A key feature of diarthroses is the joint capsule, a fibrous connective tissue that encloses the joint
Diarthroses are further classified based on the type of movement they permit. For example, hinge joints, like