Joints (Articulations).

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Presentation transcript:

Joints (Articulations)

3 Main Types of Joints Fibrous – Edges of 2 bones tightly joined by connective fibers -No movement! 3 kinds:

Cartilaginous Joints- Bones connected only by cartilage – SLIGHT movement.

Synovial Joints- Freely moveable- There is a fluid filled synovial capsule between bones. Bones connected by ligaments.

There are 6 types of synovial joints – See handout

Skeletal Movements- Movement relative to frontal plane: Flexion= decreasing the angle of a joint Extension= increasing angle of a joint (opposite of flexion) Hyperextension= extending beyond normal range Dorsiflexion= bending ankle to point toes up Plantar flexion= bending ankle to point toes down

Movement relative to sagittal plane: Protraction= moving appendage outward horizontally Retraction= moving appendage inward horizontally Movement relative to sagittal plane: Abduction= moving appendage away from midsagittal plane Adduction= moving appendage toward midsagittal plane

Inversion= turning ankle inward (sole towards midsagittal) Eversion= turning ankle outward (sole away from midsagittal)

Circular movements: Other: Circumduction= circular sweep of appendage (making cone shape) Rotation= pivoting a bone on its axis Pronation= turning palm down Supination= turning palm up Other: Elevation= raising a part Depression= lowering a part