Pivot joint in rotating an arm inward). When rotating the forearm, these movements are typically called pronation and supination. In the standard anatomical position, the forearms are supinated, which means that the palms are facing forward, and the thumbs are pointing away from the body. In contrast, a forearm in pronation would have the palm facing backward and the thumb would be closer to the body, pointing medially. Examples of a pivot joint include: In contrast, spherical joints (or ball and socket joints) such as the hip joint permit rotation and all other directional movement, while pivot joints only permit rotation. Pivot
English saddle items. Modern endurance saddle manufacturers have been innovative in methods to lighten weight and provide additional comfort for the horse, and several of these techniques have gone on to influence other saddle types. The panels are stuffed with different types of material, all designed to spread pressure evenly and disperse sweat. Most endurance saddles may have extended panels (called "fans" or "blazers"), which increase bearing area. Others may have "floating" panels, which are particularly useful since endurance riders often ride with their seat out of the saddle (releasing pressure from the back, but increasing the amount felt on the stirrup