Hinge joint best examples of ginglymoid joints are the Interphalangeal joints of the hand and those of the foot and the joint between the humerus and ulna. The knee joints and ankle joints are less typical, as they allow a slight degree of rotation or of side-to-side movement in certain positions of the limb. The knee is the largest hinge joint in the human body. Hinge and pivot joints are both types of synovial joint. A hinge joint can be considered a modified sellar/saddle joint, with reduced movement. Other objects that work like hinged joints are door hinges, closet doors, and dog
Western saddle variations include the following: There are many variations of design and optional equipment elements that were influenced by geographic region, history, use and the body types of horses bred in a given area. Certain stylistic elements seen on some, but not all western saddles include: There are several different sizes of trees commonly found in saddles. Trees differ in the width of gullet and bars of the saddle, pitch of the bars (steep to flat, usually between an angle of 86 to 94 degrees with 90 being common), and length of the bars. The tree also influences the shape of