pivot joint, in vertebrate anatomy, a freely moveable joint (diarthrosis) that allows only rotary movement around a single axis. The moving bone rotates within a ring that is formed from a second bone and adjoining ligament.

2023年10月30日 · Pivot joints are one of six types of synovial joints along with plane joints, ellipsoid joints, hinge joint s, ball and socket joints and saddle joints. Pivot joints got their name primarily for the movement they allow – pivoting (i.e. a …

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.

2021年2月9日 · A pivot joint permits movement of the bones in one plane, such as rotation around a single axis. In the human body, the joint of the wrist that lets the palm of the hand move up and down is possible because of pivot joints.

2023年12月22日 · Pivot joints are those joints that show movement in a single direction. Joints are points of contact between bones. The joint acts as a fulcrum that helps in dispersing the force generated by the muscles. The Pivot joint is a type of Synovial joint that is characterized by the presence of synovial fluid.

Pivot joints, also known as trochoid joints, are a type of synovial joint that allows for rotational movement around a single axis. They enable a limited range of motion, primarily rotation, and are essential for various body movements and functions.

The primary example of a pivot joint in the human body is found in the neck, specifically between the first and second cervical vertebrae (the atlas and axis). This joint allows for the rotation of the head from side to side, enabling us to look over our shoulders or turn our heads without moving our entire bodies.

Trochoid or Pivot-joint (articulatio trochoidea; rotary joint). —Where the movement is limited to rotation, the joint is formed by a pivot-like process turning within a ring, or a ring on a pivot, the ring being formed partly of bone, partly of ligament.

2023年11月21日 · What is a Pivot Joint? A joint in the human body refers to an area where two or more bones are joined together to allow movement. A pivot joint is a specific type of joint where a...

The first and second cervical vertebrae pivot to allow neck movement from side to side, and the ulna and radius in the forearm pivot from side to side, as well. These are true pivot joints, but many joints in the human skeleton allow for pivoting movements such as in the hips and spine.