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The synovial membrane (also known as the synovial stratum, synovium or stratum synoviale) is a specialized connective tissue that lines the inner surface of capsules of synovial joints, tendon sheaths, and synovial bursas.
an outer (fibrous membrane, fibrous stratum) composed of avascular white fibrous tissue an inner ( synovial membrane , synovial stratum ) which is a secreting layer On the inside of the capsule, articular cartilage covers the end surfaces of the bones that articulate within that joint.
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.
A synovial membrane is a type of connective tissue membrane that lines the cavity of a freely movable joint. For example, synovial membranes surround the joints of the shoulder, elbow, and knee. Fibroblasts in the inner layer of the synovial membrane release hyaluronan into the joint cavity.
The inner membrane of synovial joints is called the synovial membrane and secretes synovial fluid into the joints. [3] Synovial fluid is an ultrafiltrate from blood, and contains proteins derived from the blood plasma and proteins that are produced by cells within the joint tissues. [4]
Membranes can be either of connective tissue or epithelial tissue. Connective tissue membranes include the meninges (the three membranes covering the brain and spinal cord) and synovial membranes that line joint cavities. [18] Mucous membranes and serous membranes are epithelial with an underlying layer of loose connective tissue. [18]
The synovial membrane between the second and third cuneiforms behind, and the second and third metatarsal bones in front, is part of the great tarsal synovial membrane. Two prolongations are sent forward from it, one between the adjacent sides of the second and third, and another between those of the third and fourth metatarsal bones.
Synovial hyperplasia (an increase in cell number) is a typical feature of the autoimmune disease called rheumatoid arthritis (RA). During the progression of this disease the synovial membrane becomes a place where constant inflammatory processes take place, which can eventually lead to cartilage damage and joint destruction and deformation.