Joints or joints are the functional unions between the different bones of the skeleton. They are divided into the following groups according to their structure and mobility:
1 & #8211; Fibrous joints (Sinartroses) or immovable;
2 & #8211; Cartilage joints (Anfiartroses) or with limited movements;
3 & #8211; Synovial joints (Diarthrosis) or joints of broad movements.