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Articulations
Chapter 14 - Articulations
32
Medical
Undergraduate 1
06/20/2015

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Term
Point of contact between bones
Definition
Articulation
Term
May be classified by using a structural or functional scheme
Definition
Joints
Term
Joints are named according to:
Definition
Structural classification
Term
Presence of a fluid-filled joint capsule
Definition
Synovial joint
Term
Joints are named according to the degree of movement allowed
Definition
Functional classification
Term
Immovable joint (sutures to the skull)
Definition
Synarthroses
Term
Between the root of a tooth and the alveolar process of the mandible or maxilla
Definition
Gomphoses
Term
Freely moveable joints
Definition
Synovial joints (diarthroses)
Term
Hyaline cartilage covering the articular surfaces of bones
Definition
Articular coverage
Term
Small space between the articulating surfaces of the two bones of the joint
Definition
Joint cavity
Term
Pads of fibrocartilage located between articulating bones
Definition
Menisci (articular disks)
Term
Strong cords of dense, white, fibrous tissue that holds the bones of a synovial joint more firmly together
Definition
Ligaments
Term
Synovial membranes filled with synovial fluid:cushion joints and facilitate movements of tendons
Definition
Bursae
Term
Permit movement around only one axis and in only one plane
Definition
Uniaxial joints
Term
A projection of one bone articulates with a ring or notch of another bone
Definition
Pivot
Term
Synovial joints in which the articulating ends of the bones resemble reciprocally shaped miniature saddles; only example in the body is the thumb
Definition
Saddle
Term
Synovial joints in which a condyle fits into an elliptical socket
Definition
Condyloid (ellipsoidal) joints
Term
Most moveable joints; the ball-shaped head of the bone fits into a concave depression
Definition
Ball and Socket
Term
Relatively flat articulating surfaces that allow limited gliding movements along various axes
Definition
Gliding joints
Term
Lateral articulation of the capitulum of the humerus with the head of the radius
Definition
Humeroradial Joint
Term
Largest and one of the most complex and most frequently injured joints
Definition
Knee Joint
Term
Decreases the angle between bones; bends or folds one part on another
Definition
Flexion
Term
Increases the angle between bones/body parts; returns a part from its flexed position to its anatomical position
Definition
Extension
Term
Stretching or extending part beyond its anatomical position
Definition
Hyperextension
Term
Increases the angle between the top of the foot and the front of the leg
Definition
Plantar flexion
Term
Decreases the angle between the top of the foot and the front of the leg
Definition
Dorsiflexion
Term
Turning the sole of the foot inward
Definition
Inversion
Term
Turning the sole of the foot outward
Definition
Eversion
Term
Moves a part forward
Definition
Protraction
Term
Moves a part backward
Definition
Retraction
Term
AKA; degenerative joint disease; most common non-inflammatory disorder of a moveable joint; caused by wear and tear
Definition
Osteoarthritis
Term
A form of systemic autoimmune disease that involves chronic inflammation of many different tissues and organs of the body
Definition
Rheumatoid arthritis
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