Joints, also known as articulations, are a form of connection between bones stabilised by ligaments. The study of joints is called arthrology. They provide stability to the skeletal system, as well as allowing for specialised movement.
Gross anatomy
Joints can be classified into three broad types according to the tissue that binds them.
Structural types
Functional types
synarthroses: allow very little, if any, movement
amphiarthroses: allow a small amount of movement
diarthroses: freely moving
Classification - size
For the purposes of describing arthropathy, the joints of the appendicular skeleton are traditionally divided into large and small joints. These have been formally defined by the American College of Rheumatology and European League Against Rheumatism in their 2010 rheumatoid arthritis guidelines as. 1: