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 bars were uncomfortable in this new position, so they were recessed. The waist of the saddle was also made narrower. Additionally, padding was placed under the knee rolls, for extra security. The term "English saddle" encompasses several types, including those used for show jumping and hunt seat, dressage, Saddle seat, horse racing and polo. To non-horsemen, the major distinguishing feature of an English saddle is its lack of a horn. However, some Western saddles, such as those used to ride rough stock in rodeos and certain types of western-influenced saddles used in endurance riding, lack a horn as well. These