Joints Chapter 8. What is a joint? Defined as the site where two or more bones meet. Also called an “articulation”. Joints allow mobility within our skeleton.

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Presentation transcript:

Joints Chapter 8

What is a joint? Defined as the site where two or more bones meet. Also called an “articulation”. Joints allow mobility within our skeleton.

Classification of Joints Functional classification  Synarthroses  Amphiarthroses  Diarthroses

Classification of Joints Structural classification  Fibrous joints  Cartilaginous joints  Synovial joints

Classification of Joints

FIBROUS JOINTS General Characteristics  Bones are joined by fibrous tissue  No joint cavity is present  Most are immovable but some are slightly moveable

Types of Fibrous Joints Sutures Synostosis Gomphosis Syndesmosis

Sutures

Synostosis

Gomphosis

Syndesmosis

CARTILAGINOUS JOINTS General Characteristics  Articulating surfaces are united by cartilage  No joint cavity  Can be synarthrotic or amphiarthrotic

Types of Cartilaginous Joints Synchondrosis Symphysis

Synchondrosis

Symphysis

SYNOVIAL JOINTS General Characteristics  Articular bones are separated by a fluid-filled cavity  Joints of limbs  Diarthrotic

Components of a Synovial Joint

Functions of a Synovial Fluid

Accessory Structures of a Synovial Joint

Movements of Synovial Joints Axis of motion  Nonaxial  Uniaxial  Biaxial  Multiaxial

Movements of Synovial Joints

Movements Relative to Anatomical Position

Movements with Limited Applications

Special Movements

Classes of Synovial Joints

Joint Injuries Sprains Dislocations Bursitis Tendonitis Synovitis Patellar bursitis Dislocation of the shoulder joint

Arthritis

Gouty Arthritis

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