Chap 8 CBIO 5 - Factors Influencing the Stability of...

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Factors Influencing the Stability of Synovial Joints 1. The shapes of the articular surfaces of bones found at a synovial joint determine the movements that occur at the joint, but play a minimal role in stabilizing the joint. 2. Ligaments at a synovial joint prevent excessive or unwanted movements and help to stabilize the joint; the greater the number of ligaments at the joint the greater the stability. 3. Muscle tone keeps tendons crossing joints firm, which is the most important factor stabilizing joints Synovial Joints: Range of Motion -All synovial joints have some common features, but they do not all have the same shape and do not offer the same freedom of movement. -Synovial joints can be classified based on the number of axes the joint moves around, which is determined by the shape of the articular surfaces:- 1. Nonaxial – slipping/ gliding movements only 2. Uniaxial – movement in one plane 3. Biaxial – movement in two planes 4. Multiaxial – movement in or around all three planes
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This note was uploaded on 09/28/2011 for the course CBIO 2200 taught by Professor Wenzel during the Fall '08 term at University of Georgia Athens.

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Chap 8 CBIO 5 - Factors Influencing the Stability of...

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