articulation

An articulation, or joint, is where two or more bones meet in the skeletal system. These joints hold the skeleton together while allowing for movement, ranging from the immobile joints in the skull to the highly mobile shoulder and hip joints. Joints are supported by ligaments and cartilage, and stabilized by tendons, muscles, and other connective tissues.12

There are two main structural types of joints: diarthroses (synovial joints), which contain fluid, and synarthroses, which do not. Synovial joints are permanent and allow for movement, with seven types including hinge and ball-and-socket joints. Synarthroses can be fibrous, symphysis, or cartilaginous, and some are transient, fusing after birth, while others are permanent. Articulation also refers to the clear pronunciation of words.3456