Joints
Synovial
Synovial joints:sometimes called diathorsis, are the most movable type of joints in body.
1. Gliding Joints Also known as a plane joint or planar joint, is a common type of synovial joint formed between bones that meet at flat articular surfaces. Gliding joints allow the bones to glide past one another in any direction along the plane of the joint- up and down, left and right, and diagonally. 2. Pivot Joints The axis of a convex articular surface is parallel with the longitudinal axis of the bone. |
3. Hinge Joints•Is a bone joint in which the articular surface are molded to each other in such a manner as to permit motion only in one plane. Hinge joints are formed between two or more bones where the bones can only move along one axis to flex or extend.
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4. Saddle Joints • Saddle- shaped articular surface that are convex in one direction and concave in another and that permit movement in all directions except axial rotation.
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5. Condyloid•Is an oviod articular surface, or condyle that is received into an elliptical cavity. This permits movement in two planes, allowing flexion, extension, adduction, abduction, and circumduction.
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6. Ball-and-Socket• A joint,such as the shoulder or hip joint, in which a spherical knob or knoblike part of one bone fits into a cavity or socket of another, so that some degree of rotary motion is possible in every direction
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