Pivot joint Pivot joint In animal anatomy, a pivot joint (trochoid joint, rotary joint, lateral ginglymus) is a type of synovial joint. In pivot joints, the axis of a convex articular surface is parallel with the longitudinal axis of the bone. According to one classification system, a pivot joint like the other synovial joint —the hinge joint has one degree of freedom. Note that the degrees of freedom of a joint is not the same as the same as joint's range of motion. Pivot joints allow for rotation, which can be external (for example when rotating an arm outward), or internal (as
Western saddle English saddles include: While a western saddle is designed to be ridden for many hours at a stretch; for covering distance where time is a factor, such as with Endurance riding, the lighter English saddle dominates. There are many types of Western saddle available. Some are general-purpose models while others emphasize either greater freedom for the horse or greater security for the rider, as may be necessary for specialized work in the various Western horse sports such as cutting, reining, barrel racing, team roping, equitation and western pleasure. Factors such as width of the swells, height of the cantle, depth