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  2. Synovial joint - Wikipedia

    en.wikipedia.org/wiki/Synovial_joint

    A multiaxial joint (polyaxial joint or triaxial joint) is a synovial joint that allows for several directions of movement. [9] In the human body, the shoulder and hip joints are multiaxial joints. [10] They allow the upper or lower limb to move in an anterior-posterior direction and a medial-lateral direction.

  3. Synovial fluid - Wikipedia

    en.wikipedia.org/wiki/Synovial_fluid

    Synovial fluid, also called synovia, [help 1] 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] Synovial fluid is a small component of the ...

  4. Synovial membrane - Wikipedia

    en.wikipedia.org/wiki/Synovial_membrane

    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. [1][2] It makes direct contact with the fibrous membrane on the outside surface and with the synovial fluid lubricant on ...

  5. Knee - Wikipedia

    en.wikipedia.org/wiki/Knee

    Articular surfaces of femur Articular surfaces of tibia. The knee is a modified hinge joint, a type of synovial joint, which is composed of three functional compartments: the patellofemoral articulation, consisting of the patella, or "kneecap", and the patellar groove on the front of the femur through which it slides; and the medial and lateral tibiofemoral articulations linking the femur, or ...

  6. Ball-and-socket joint - Wikipedia

    en.wikipedia.org/wiki/Ball-and-socket_joint

    1562. FMA. 75301. Anatomical terminology. [edit on Wikidata] The ball-and-socket joint (or spheroid joint) is a type of synovial joint in which the ball-shaped surface of one rounded bone fits into the cup-like depression of another bone. The distal bone is capable of motion around an indefinite number of axes, which have one common center.

  7. Plane joint - Wikipedia

    en.wikipedia.org/wiki/Plane_joint

    Anatomical terminology. [edit on Wikidata] A plane joint (arthrodial joint, gliding joint, plane articulation) is a synovial joint which, under physiological conditions, allows only gliding movement. Plane joints permit sliding movements in the plane of articular surfaces. The opposed surfaces of the bones are flat or almost flat, with movement ...

  8. Pivot joint - Wikipedia

    en.wikipedia.org/wiki/Pivot_joint

    Pivot joint. In animal anatomy, a pivot joint (trochoid joint, rotary joint or lateral ginglymus) is a type of synovial joint whose movement axis is parallel to the long axis of the proximal bone, which typically has a convex articular surface. According to one classification system, a pivot joint like the other synovial joint —the hinge ...

  9. Synovitis - Wikipedia

    en.wikipedia.org/wiki/Synovitis

    Synovitis is the medical term for inflammation of the synovial membrane. 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 ...