What type of joint primarily allows for rotation of movement?

The pivot joint is specifically designed to allow for rotational movement around a single axis. This type of joint consists of a rounded bone that fits into a ring-like structure formed by another bone and surrounding ligament. A prime example of a pivot joint is the atlantoaxial joint, which allows for the rotation of the head side to side, as seen when shaking your head "no."

In contrast, fixed joints, also known as immovable joints, are not designed for any movement at all, such as the sutures of the skull. Ball-and-socket joints, while they do allow for a wide range of movement including rotation, also permit movements such as flexion, extension, abduction, and adduction. Hinge joints primarily allow for bending and straightening motions, similar to the way a door swings open and closed.

Thus, while other joint types have various movements, the pivot joint is uniquely suited for the primary action of rotation.