A joint is the connection between two bones. The skeletal system is made of different types of joints, including fibrous, cartilagenous and synovial. A ligament holds fibrous joints together. Cartilage joints are bones held together with a connection of cartilage. A synovial capsule surrounds the synovial joints. Synovial joints are the largest number of joint types in the skeletal system. Each joint type has a specific method of movement. The fibrous (fixed or immovable) joints in the skeletal system include the sutures of the skull. The coronal suture connects the parietal and frontal skull bones. The sagittal suture connects the two parietal bones. The lambdoid suture unites the parietal with the occipital.