1 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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Presentation transcript:

1 Joints of the Human Body Joint Classification Synovial Joints – Characteristics of synovial joint – Types of synovial joints

2 Joint is a point of connection between two bones Strands of connective tissue, ligaments, hold the bones together and ensure the stability of joints

3 Joint Classification Joints are classified according to their motion capabilities: – Synarthroses Immovable – Amphiarthroses Slightly movable – Diarthroses Allow the greatest amount of motion

Fibrous Joint: Synarthroses 4

Cartilaginous Joint: Amphiarthroses 5

Synovial Joint: Diarthroses 6

7 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)

8 Hinge Joint Uniaxial Has one articulating surface that is convex, and another that is concave. E.g. humero-ulnar elbow joint, interphalangeal joint.

9 Pivot Joint Uniaxial E.g. head of radius rotating against ulna

10 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

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

Sport Books Publisher12 Ball and Socket Joint Multiaxial (rotation in all planes) A rounded bone is fitted into a cup=like receptacle

13 Plane (Gliding) Joint Uniaxial (permits gliding movements) The bone surfaces involved are nearly flat E.g. Carpal and Tarsals