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An example of a simple synovial joint, e.g. a metacarpophalangeal (finger) joint, is shown above-right. More complicated synovial joints may involve more than two bones, may include sesamoid bones e.g. the patella in the knee joint, may include bursae, and may include accessory ligaments.
  Synovial joints allow for movement between the articulating bones (in this case the sternum and the clavicle). The articulating bones are covered in articular cartilage, â¦ which are connected with ligaments and lined with a synovial membrane.There is a fluid-filled sac between these types of joints to reduce the amount of friction with movement and the fluid inside of these sacs is called synovial fluid.he synovial joint is so called because the gap formed by the two articulating bones contains synovial fluid, which is a clear viscous fluid which lubricates the joints (as we â¦ ll as the sheaths of tendons) to reduce wear and tear. 2 people found this useful. Answered. In Human Anatomy and Physiology.