Movements
The articulation of the hand and wrist considered as a whole involves four articular surfaces:
- (a) the inferior surfaces of the radius and articular disk;
- (b) the superior surfaces of the navicular, lunate, and triangular, the pisiform having no essential part in the movement of the hand;
- (c) the S-shaped surface formed by the inferior surfaces of the navicular, lunate, and triangular;
- (d) the reciprocal surface formed by the upper surfaces of the bones of the second row.
These four surfaces form two joints: (1) a proximal, the wrist-joint proper; and (2) a distal, the mid-carpal joint.
Read more about this topic: Intercarpal Articulations
Famous quotes containing the word movements:
“Spirit borrows from matter the perceptions on which it feeds and restores them to matter in the form of movements which it has stamped with its own freedom.”
—Henri Bergson (1859–1941)
“In a universe that is all gradations of matter, from gross to fine to finer, so that we end up with everything we are composed of in a lattice, a grid, a mesh, a mist, where particles or movements so small we cannot observe them are held in a strict and accurate web, that is nevertheless nonexistent to the eyes we use for ordinary living—in this system of fine and finer, where then is the substance of a thought?”
—Doris Lessing (b. 1919)
“All great movements are popular movements. They are the volcanic eruptions of human passions and emotions, stirred into activity by the ruthless Goddess of Distress or by the torch of the spoken word cast into the midst of the people.”
—Adolf Hitler (1889–1945)