Classification of articulations

CLASSIFICATION OF ARTICULATIONSBy Sadie Gordon & Bob

CLASSIFICATION OF JOINTS

Functionally Fibrous

Dense Regular Connective Tissue Cartilaginous

Cartilage Synovial

Fluid Filled Joint Cavity

Structurally Synarthrosis

Immobile Amphiarthrosis

Slightly Movable Joint Diarthrosis

Freely Mobile Joint

FUNCTIONAL CLASSIFICATION

Synarthrosis An Immobile Joint

Amphiarthrosis Slightly Mobile Joint

Diarthrosis Freely Mobile Joint

STRUCTURAL CLASSIFICATION

Fibrous Dense irregular connective tissue that holds

bone to bones No joint cavity

Cartilaginous Pad of cartilage wedged between bones No Joint cavity

Synovial Ends of bones are covered with cartilage Joint capsule is lined with synovial fluid All synovial joints are freely moveable

(diarthrotic)

FIBROUS JOINTS

Gomphosis Suture Syndesmosis

GOMPHOSIS

• Membranes that holds tooth in the Jaw• Example tooth in the Jaw Functionally classified as Synarthrosis

(immobile)

SUTURE

• Dense regular connective tissue that connects skull bones

• Example: Lambdoid Suture• Functionally Classified as Synarthrosis

SYNDESMOSIS

• Dense regular connective tissue fibers between bones

Examples: Syndesmoses are the articulations between the fibula and the fibula, and the radius and the ulna

Functionally classified as Amphiarthroses

(slightly moveable)

TYPES OF CARTILAGINOUS JOINTS

Synchondrosis Symphysis

SYNCHONDROSIS

• Hyaline cartilage plate between bones• Examples: Epiphyseal plates, and Costochondral

joints• Functional Classified as Synarthrosis

EXAMPLES OF SYNCHONDROSIS JOINTS

SYMPHYSIS

• Fibrocartilage pad between bones• Examples: Pubic symphysis, and intervertebral disc• Functional classified as Amphiarthrosis

SYNOVIAL

Uniaxial Plane joint Hinge Joint Pivot joint

Biaxial Condylar joint Saddle joint

Multiaxial Ball-and-socket joint

UNIAXIAL

• Plane joint Flattened or slightly curved faces slide across on

another Example: Intercarpal joints & Intertarsal joints Functionally Classified as Diarthrosis

• Hinge Joint Permits angular movements in a single plane Example: Elbow Joint Functionally Classified as Diarthrosis

• Pivot joint Permits rotation only Example: Atlantoaxial joint Functionally Classified as Diarthrosis

BIAXIAL

• Condylar joint Oval articular surface on one bone closely interfaces

with a depressed oval surface on another bone Examples: MP joints Functionally Classified as Diarthrosis

• Saddle joint Saddle-shaped articular surface on one bone closely

interfaces with depressed surface on another bone Example: Articulation between carpal and first

metacarpal bone Functionally Classified as Diarthrosis

MULTIAXIAL

• Ball-and-socket joint Round head of one bone rests within cup-shaped

depression in another bone Example: Glenohumeral joint, and hip joint Functionally Classified as Diarthrosis

CONCLUSION Structural

Fibrous Gomphosis Suture Syndesmosis

Cartilaginous Synchondrosis Symphysis

Synovial Uniaxial

Plane Joint Hinge Joint Pivot Joint

Biaxial Condylar Joint Saddle Joint

Mulitiaxial Ball-and-Socket Joint

Functional Synarthrosis

Immobile Amphiarthrosis

Slightly Mobile Diarthrosis

Freely Mobile