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Movements and Joints To turn the moving bone about its axis Known as Lateral Rotation in the neck! Horizontal Abduction Moving away from the midline in the horizontal plane Horizontal Adduction Moving toward the midline in the horizontal plane Circumduction: Flexion, Abduction, Extension, Adduction in sequence Flexion toward the outside of the body Vary in size and shape. Simple Joint: A joint with only two articulating surfaces Examples: Hip and Ankle (talotibal) Compound Joint: A joint with three or more articulating surfaces Example: Wrist Complex Joint: A joint with more than two articulating surfaces and with a disc or fibrocartilage Example: Knee. The hinge joint allows movement in one plane (flexion, extension) Examples: Distal Interphalageal (DIP) and Proximal Interphalageal (PIP) joints of the phalanges in the foot and hand Ulnohumeral articulation at the elbow Movement consists of two flat surfaces that slide over each other to allow movement. In the hand the Carpals will slide over each other as the hand is moved to positions of flexion, extension, radial deviation, or ulnar deviation. In the foot, the Tarsals shift during pronation and supination, sliding over each other in the process. The ellipsoid joint allows movement in two planes (flexion, extension; abduction, adduction) Examples: The radiocarpal articulation at the wrist The metacarpophalangeal articulation in the phalanges. The saddle joint only found at the carpometacarpal articulation of the thumb Allows two planes of motion (flexion, extension; abduction, adduction) with a small amount of rotation also allowed. It is similar to the ellipsoid joint in function The pivot joint also allows movement in one plane (rotation; pronation, supination) Examples: superior and inferior radioulnar joint The Atlas-Axis articulation at the base of the skull. Allows primary movement in one plane flexion, extension) with small amounts of movement in another plane (rotation). Examples: The knee joint The temporomandibular joint Allows movement in three planes (flexion, extension; abduction, adduction; rotation) Most mobile joint Examples: The hip The Shoulder Bones held together by either hyaline cartilage Example: epiphyseal plates Or by fibrocartilage Example: pubic symphysis and the intervertebral discs The movement is very limited, although not to the degree of the synarthodial joints. Allow little or no movement to occur between the bones and hold the bones firmly together. Some bones are held together by fibrous articulations Examples: Sutures of the Skull Distal Tibiofibular Joint As movement occurs through a range of motion, the actual contact area varies between the articulating surfaces Major Joints of the Body Joint Type Degrees of Freedom Vertebrae Amphiarthroidial 3 Hip Ball-and-Socket 3 Shoulder Ball-and-Socket 3 Knee Condyloid 2 Wrist Ellipsoid 2 Metacarpophalangeal (fingers) Ellipsoid 2 Carpometacarpal (thumb) Saddle 2 Elbow Hinge 1 Radioulnar Pivot 1 Atlantoaxial Pivot 1 Ankle Hinge 1 Interphalangeal Hinge 1 Supine: Face upward; on your back Prone: Face downward; on your stomach Cornonal (Frontal) Plane splits the body into anterior / posterior sections Anterior: Front of the body or body part Posterior: Back of the body or body part When the body is split along the Mid Sagittal or Median Sagittal Plane Lateral: Away from the midline of the body Anatomical position Medial: Toward the midline of the body Anatomical position Distal: Farthest from a point of attachment to the body Proximal: Used to describe where the appendage joins the body Transverse or Horizontal Plane Inferior: Toward the bottom of the body or body part Superior: Toward the top of the body or body part Superficial: Toward the surface of the body Deep (visceral): Deep inside the body Mostly used in animals Dorsal (anterior): Upper Surface Ventral (posterior): Bottom Surface Internal: Deeper Inside Toward External: Near the surface Outside Away Volar Ventral aspect of the fingers Palmar: Ventral aspect of the hand (palm of the hand) Plantar: Ventral aspect of the foot (sole of the foot) Ipsilateral: One sided; pertaining to one side Contralateral: Both sides; Bilateral