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Articular discs and meniscus: some of the diarthrodial joints have a fibrocartilage structure between articulating bones.Ligaments are essential to limit the movement of the diarthrodial joint. Ligaments: ligaments are the bands of white fibrous tissue that reinforce and support the diarthrodial joint.

The cartilaginous layer is made up of hyaline cartilage and is non-vascular. Articular cartilage: this is a cartilaginous layer covering the surface of the articulating bones to reduce the friction between the bone surfaces and absorb the shock.The synovial layer or synovium secretes and absorbs the synovial fluid and continuously enriches it with nutrients. The inner layer (or the synovial layer) is richly supplied with blood vessels and made up of the serous connective tissue.The outer fibrous layer comprises white fibrous tissue that holds the joint together and supports the synovium.The articular capsule is made up of two layers. The articular capsule encloses the diarthrodial joint and is in continuation of the periosteum of articulating bones.Credit: OpenStax College, CC 3.0.Īccordingly, the essential component of the diarthrodial or synovial joints are: Figure 1: Basic structure of a diarthrodial or synovial joint. Additionally, the ends of the articular bones are encased in a protective cartilaginous layer known as articular cartilage. The fluid present in the joint cavity, known as synovial fluid, provides the required smoothness and lubrication to the bones for motion. Within the articular capsule, the synovial membrane creates a fluid-filled sac or the joint cavity. The articular capsule is made up of cartilage and fibrous tissues. Structure of diarthrodial joint or synovial jointĭiarthrodial joints are freely moving joints wherein the joint is encased in an articular capsule, and the bones connect with each other in a fluid-filled cavity known as the synovial cavity. Diarthrodial joints are the most common joint found in the body of mammals. Amphiarthroses are cartilaginous jointsįrom the above classification, it can be concluded that all the synovial joints of the body are the diarthrodial joints and are involved in the majority of the body movements.Histologically or structurally – based on the type of connective tissue in the joint, there are three types of joints:Ĭorrelating these two classifications leads to the following conclusions:

Freely movable joints or mobile joints, i.e., diarthrosis.

Slightly movable joints, i.e., amphiarthrodial joints.

Immovable joints, i.e., synarthrosis joints.

Functionality – based on the amount of mobility, there are three types of joints: Different types of joints in the body can be classified in two ways:Ī. Joints or articulations are the connecting point between the two bones that provide the required mobility and stability to the skeletal system. To better understand the diarthrodial joints, we must understand the joints and the classification of the joints.