external rotation method — closed reduction of anterior shoulder dislocation by adducting the arm to the patient s side with the elbow flexed to 90 degrees as the patient lies supine, then rotating the arm externally using the forearm as a lever … Medical dictionary
Rotation (mathematics) — Rotation of an object in two dimensions around a point O. In geometry and linear algebra, a rotation is a transformation in a plane or in space that describes the motion of a rigid body around a fixed point. A rotation is different from a… … Wikipedia
Rotation in office — Rotation in office, or term limits, dates back to the American Revolution, and prior to that to the democracies and republics of antiquity. The council of 500 in ancient Athens rotated its entire membership annually, as did the ephorate in… … Wikipedia
abduction–external rotation test — Roos t … Medical dictionary
tibial external rotation test — dial t … Medical dictionary
Rotation — This article is about movement of a physical body. For other uses, see Rotation (disambiguation). A polyhedron resembling a sphere rotating around an axis. A rotation is a circular movement of an object around a center (or point) of rotation. A… … Wikipedia
Rotation around a fixed axis — Rotational motion can occur around more than one axis at once, and can involve phenomena such as wobbling and precession. Rotation around a fixed axis is a special case of rotational motion, which does not involve those phenomena. The kinematics… … Wikipedia
Rotation matrix — In linear algebra, a rotation matrix is a matrix that is used to perform a rotation in Euclidean space. For example the matrix rotates points in the xy Cartesian plane counterclockwise through an angle θ about the origin of the Cartesian… … Wikipedia
Rotation representation (mathematics) — In geometry a rotation representation expresses the orientation of an object (or coordinate frame) relative to a coordinate reference frame. This concept extends to classical mechanics where rotational (or angular) kinematics is the science of… … Wikipedia
Rotation period — The rotation period of an astronomical object is the time it takes to complete one revolution around its axis of rotation relative to the background stars. It differs from the planet s solar day, which includes an extra fractional rotation needed … Wikipedia
