Pivot joints are a type of synovial joint that allow for rotational movement around a single axis. They are found in areas of the body where one bone rotates around another, such as the joint between the atlas and axis vertebrae in the neck. This unique structure enables actions like turning the head from side to side. Another example of a pivot joint is the radioulnar joint in the forearm, which allows the radius and ulna bones to rotate, enabling movements like pronation and supination of the hand. These joints are essential for various everyday activities that require twisting motions.