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  2. Saddle joint - Wikipedia

    en.wikipedia.org/wiki/Saddle_joint

    Saddle joints are said to be biaxial, [5] allowing movement in the sagittal and frontal planes. [2] Examples of saddle joints in the human body include the carpometacarpal joint of the thumb, [6] [7] the sternoclavicular joint of the thorax, [8] the incudomalleolar joint of the middle ear, [9] and the calcaneocuboid joint of the heel. [2]

  3. Synovial joint - Wikipedia

    en.wikipedia.org/wiki/Synovial_joint

    A multiaxial joint, such as the hip joint, allows for three types of movement: anterior-posterior, medial-lateral, and rotational. 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]

  4. List of hyperboloid structures - Wikipedia

    en.wikipedia.org/wiki/List_of_hyperboloid_structures

    Hyperbolic paraboloid saddle roof on train station Church Army Chapel, Blackheath: 1963 Blackheath, south east London United Kingdom: Hyperbolic paraboloid saddle roof on church E.T. Spashett: Kobe Port Tower: 1963 Kōbe Japan: Hyperboloid observation tower 108 m (354 ft) Nikken Sekkei Company: Saint Louis Science Center's James S. McDonnell ...

  5. Pivot joint - Wikipedia

    en.wikipedia.org/wiki/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.

  6. First metacarpal bone - Wikipedia

    en.wikipedia.org/wiki/First_metacarpal_bone

    The first metacarpal bone is short and thick with a shaft thicker and broader than those of the other metacarpal bones. Its narrow shaft connects its widened base and rounded head; the former consisting of a thick cortical bone surrounding the open medullary canal; the latter two consisting of cancellous bone surrounded by a thin cortical shell.

  7. Real image - Wikipedia

    en.wikipedia.org/wiki/Real_image

    In other words, a real image is an image which is located in the plane of convergence for the light rays that originate from a given object. Examples of real images include the image produced on a detector in the rear of a camera, and the image produced on an eyeball retina (the camera and eye focus light through an internal convex lens).

  8. Tarsometatarsal joints - Wikipedia

    en.wikipedia.org/wiki/Tarsometatarsal_joints

    The tarsometatarsal joints (Lisfranc joints) are arthrodial joints in the foot. The tarsometatarsal joints involve the first, second and third cuneiform bones, the cuboid bone and the metatarsal bones. The eponym of Lisfranc joint is 18th–19th-century surgeon and gynecologist Jacques Lisfranc de St. Martin. [1]

  9. Amphiarthrosis - Wikipedia

    en.wikipedia.org/wiki/Amphiarthrosis

    An example is the joints of the vertebral column only allow for small movements between adjacent vertebrae, but when added together, these movements provide the flexibility that allows the body to twist, or bend to the front, back, or side. [2]