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Published byKenneth Carroll Modified over 9 years ago
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Sport Books Publisher1 Joints of the Human Body Joint Classification Synovial Joints – Characteristics of synovial joint – Types of synovial joints
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Sport Books Publisher2 Joint is a point of connection between two bones Strands of connective tissue, ligaments, hold the bones together and ensure the stability of joints
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Sport Books Publisher3 Joint Classification Joints are classified according to their motion capabilities: – Synarthroses Immovable – Amphiarthroses Slightly movable – Diarthroses Allow the greatest amount of motion
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Sport Books Publisher4 Joint Classification Cont ’ d Joints are further classified by the material that joints them: – Fibrous joint Allow no movement E.g. sutures of the scull – Cartilaginous joints Allow limited movement E.g. intervertebral discs – Synovial joints Allow large range of movements E.g. hip joint
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Fibrous Joint - Synarthroses Sport Books Publisher5
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Cartilaginous Joint- Amphiarthroses Sport Books Publisher6
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Synovial Joint- Diarthroses Sport Books Publisher7
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8 Types of Synovial Joints There are three basic types of synovial joints: – unilateral (rotation only about one axis) – biaxial joints (movement about two perpendicular axes) – multiaxial joints (movement about all three perpendicular axes)
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Sport Books Publisher9 Hinge Joint Uniaxial Has one articulating surface that is convex, and another that is concave E.g. humero-ulnar elbow joint, interphalangeal joint
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Sport Books Publisher10 Pivot Joint Uniaxial E.g. head of radius rotating against ulna
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Sport Books Publisher11 Condyloid/Ellipsoidal Joint Biaxial (flexion-extension, abduction-adduction) The joint surfaces are usually oval One joint surface is an ovular convex shape, and the other is a reciprocally shaped concave surface
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Sport Books Publisher12 Saddle Joint Biaxial (flexion-extension, abduction- adduction) The bones set together as in sitting on a horse
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Sport Books Publisher13 Ball and Socket Joint Multiaxial (rotation in all planes) A rounded bone is fitted into a cup=like receptacle
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Sport Books Publisher14 Plane (Gliding) Joint Uniaxial (permits gliding movements) The bone surfaces involved are nearly flat E.g. Carpal and Tarsals
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