Sport Books Publisher1 Joints of the Human Body Joint Classification Synovial Joints – Characteristics of synovial joint – Types of synovial joints.

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Joints of the Human Body
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Sport Books Publisher1 Joints of the Human Body Joint Classification Synovial Joints – Characteristics of synovial joint – Types of synovial joints

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

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

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

Fibrous Joint - Synarthroses Sport Books Publisher5

Cartilaginous Joint- Amphiarthroses Sport Books Publisher6

Synovial Joint- Diarthroses Sport Books Publisher7

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)

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

Sport Books Publisher10 Pivot Joint Uniaxial E.g. head of radius rotating against ulna

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

Sport Books Publisher12 Saddle Joint Biaxial (flexion-extension, abduction- adduction) The bones set together as in sitting on a horse

Sport Books Publisher13 Ball and Socket Joint Multiaxial (rotation in all planes) A rounded bone is fitted into a cup=like receptacle

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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