Chapter 8 - Joints - Review Questions - Page 274: 11

Joints can be classified as nonaxial, uniaxial, biaxial, and multiaxial. These terms are described below; Nonaxial: These joints do not have a pivot or axis of movement. Example: gliding/plane joints. This type of joint doesn’t allow for much movement other than sliding and twisting. Uniaxial: These joints allow movement in only one plane. Example: elbow Biaxial: These joints allow for movement in two planes. Example: wrist (allows side-to-side adduction and abduction movement, as well as forward-and-backward flexion and extension movement). A common misconception is confusing a biaxial joint with a multiaxial joint, because if you combine the two movements in sequence the joint appears to be rotating in all planes. Multiaxial: These joints allow for movement in any plane. Unlike biaxial joints, multiaxial joints allow for rotation. Example: shoulder

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Joints can be classified as nonaxial, uniaxial, biaxial, and multiaxial. These terms are described below; Nonaxial: These joints do not have a pivot or axis of movement. Example: gliding/plane joints. This type of joint doesn’t allow for much movement other than sliding and twisting. Uniaxial: These joints allow movement in only one plane. Example: elbow Biaxial: These joints allow for movement in two planes. Example: wrist (allows side-to-side adduction and abduction movement, as well as forward-and-backward flexion and extension movement). A common misconception is confusing a biaxial joint with a multiaxial joint, because if you combine the two movements in sequence the joint appears to be rotating in all planes. Multiaxial: These joints allow for movement in any plane. Unlike biaxial joints, multiaxial joints allow for rotation. Example: shoulder

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