A joint's function is to bear weight, perform work and exhibit a particular range of motion during movement where two or more bones come together for the purpose of movement. A joint moves when the muscles crossing it contract.Continue Reading
Joints are classified based on how much motion they allow. Joints that do not move are known as synarthrosis. Examples of these include sutures of the skull and the gomphoses that connect the teeth to the skull. Joints that permit slight movement are classified as amphiarthrosis. These include the intervertebral disks of the spine and the pubic symphysis of the hips. Diarthroses joints have the largest range of movement and include joints in the shoulder, knees, wrists and elbows.
In addition to their range of movement, joints may be classified based on the material present in them. These include fibrous, synovial, which is the most common joint, and cartilaginous. Several types of synovial joints exist. They are ball and socket, hinge, saddle and gliding. Each type of synovial joint has a different range of motion. Ball and socket joints have the greatest range of motion. Hinge joints move in one direction only. Saddle joints have a 360 degree range of motion, and gliding joints allow bone movement in any direction.Learn more about Human Anatomy
Cartilage protects bones from rubbing against each other at joints. Cartilage also supports the shape of people's ears and noses and other bodily structures. For example, the trachea would collapse without the cartilage bands running down its length.Full Answer >
The plane, or gliding, type of synovial joint provides the least amount of movement, says Springfield Technical Community College. This type of joint is found between the vertebrae, the carpal bones in the hand and the tarsal bones in the foot.Full Answer >
The function of a ball and socket joint is to provide a high level of mobility for the joint. The two major joints of this type in the human body are the shoulder and hip joints. However, the shoulder joint has a higher degree of flexibility than the hip joint.Full Answer >
The talocrural joint is another name for one of the joints in the human ankle, and movement of this joint is called talocrural movement. This particular joint, which is one of the three joints in the ankle, is capable of dorsiflexion movement and plantarflexion movement. According to Sportsinjuryclinic.net, the talocrural joint is made from the junction of the distal ends of the tibia and fibula and the talus.Full Answer >