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
Bicycle saddle forward and backward and to tilt up and down around the axis of the bolt. There are two common types of built-in saddle clamps for standard rails, both associated with genericized trademarks: I-beam rails are long and allow a wide fore-aft adjustment range. I-beam saddle clamps use two clamping bolts for grab pieces holding the single rail. Other historical saddle clamp variations included the Ideale saddle/Zeus post combination, which used a special seat post designed to forgo the need for a clamp in order maximize weight savings. A saddle may contain one or more suspension components to improve rider comfort