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Synovial fluid, also called synovia, is a viscous, non-Newtonian fluid found in the cavities of synovial joints. With its egg white –like consistency, [ 1 ] the principal role of synovial fluid is to reduce friction between the articular cartilage of synovial joints during movement. [ 2 ]
Cavitation within the joint—small cavities of partial vacuum form in the synovial fluid and then rapidly collapse, producing a sharp sound. [7] [8] Rapid stretching of ligaments. [9] Intra-articular (within-joint) adhesions being broken. [9] Formation of bubbles of joint air as the joint is expanded. [10]
The surface of synovium may be flat or may be covered with finger-like projections or villi, which, it is presumed, help to allow the soft tissue to change shape as the joint surfaces move one on another. The synovial fluid can be thought of as a specialized fluid form of synovial extracellular matrix rather than a secretion in the usual sense. [1]
A synovial bursa, usually simply bursa (pl.: bursae or bursas), is a small fluid-filled sac lined by synovial membrane with an inner capillary layer of viscous synovial fluid (similar in consistency to that of a raw egg white). It provides a cushion between bones and tendons and/or muscles around a joint. This helps to reduce friction between ...
Joints of the hand, including the wrist and fingers. Joints of the foot, including the ankle and toes ... Tests on joint fluid may pick up on markers associated with some causes of joint pain like ...
The synovial cavity/joint is filled with synovial fluid. The joint capsule is made up of an outer layer of fibrous membrane, which keeps the bones together structurally, and an inner layer, the synovial membrane, which seals in the synovial fluid. They are the most common and most movable type of joint in the body of a mammal.
X-ray of the hand in rheumatoid arthritis Appearance of synovial fluid from a joint with inflammatory arthritis Closeup of bone erosions in rheumatoid arthritis [73] X-rays of the hands and feet are generally performed when many joints affected.
This membrane lines joints that possess cavities, known as synovial joints. The condition is usually painful, particularly when the joint is moved. The joint usually swells due to synovial fluid collection. Watercolour drawing of acute synovitis of the knee joint, showing the beginnings of the disintegration of the cartilage of the internal ...
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