What is the primary characteristic of diarthroses joints?

Diarthroses joints are characterized by their ability to allow a wide range of motion, making them the most movable type of joint in the human body. This free movement is essential for various activities, as these joints facilitate actions such as bending, rotating, and gliding. The structure of diarthroses includes a synovial cavity filled with synovial fluid, which lubricates the joint and permits smooth movement. Examples of diarthroses joints include the knee, elbow, and shoulder, which are crucial for a variety of physical activities. The unique anatomical features of these joints are what enable them to provide such extensive mobility, distinguishing them from other types of joints that either offer limited or no movement.