Pivot Joint. A joint in which a section of a cylinder of one bone fits into a corresponding cavity on the other permitting rotating movement as in the proximal articulation between the radius and ulna. With a ball joint at the top of the shank these rod ends pivot in the middle of the body instead of in the eyelet.
Also called rotary joint trochoid joint. A pivot joint also known as a rotary joint is a type of synovial joint in which a circular bone rotates upon the axis of another bone. The joint between the atlas and the axis which is right under the skull allows the turning of the head from side to side.
There are only three pivot joints in the human body.
Proximal radioulnar joint distal radioulnar joint median atlanto axial joint. A joint in which a section of a cylinder of one bone fits into a corresponding cavity on the other permitting rotating movement as in the proximal articulation between the radius and ulna. Examples of a pivot joint include. The moving bone rotates within a ring that is formed from a second bone and adjoining ligament.
