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
Bacterial gliding Bacterial gliding Bacterial gliding is a process of motility whereby a bacterium can move under its own power. This process does not involve the use of flagella, pili, or fimbriae, all of which are more well-understood apparatuses used in bacterial motility. The mechanisms of gliding are only partially known. Generally, the process occurs whereby the bacterium moves along a surface in the general direction of its long axis. Gliding may occur via distinctly different mechanisms, depending on the type of bacterium. This type of movement has been observed in phylogenetically diverse bacteria such as cyanobacteria, myxobacteria, cytophaga, flavobacteria, and mycoplasmas,