Upper Limb Anatomy RADT Chapter 5

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swilso43
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8610
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Upper Limb Anatomy RADT Chapter 5
Updated:
2010-03-01 13:27:50
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radiology anatomy RADT dixie state radiography x ray
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Description:
Radiographic Positioning and Related Anatomy (Chapter 5)
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  1. The bones in the upper limb can be divided into how many groups and what are they?
    4- (1) hand and wrist, (2) forearm, (3) arm (humerus), and (4) shoulder girdle
  2. How many bones are in the hand and wrist, and how are they divided?
    • 27-
    • 1. Phalanges (fingers and thumb) = 14
    • 2. Metacarpels (palm) = 5
    • 3. Carpels (wrist) = 8
  3. Phalanges
    • Phalanx (singular)
    • The most distal bones of the hand, which comprise the digits. (14 bones/hand)
  4. Metacarpals
    Second group of bones in the hand, these bones make up the palm of each hand. (5 bones/hand)
  5. Carpals
    The third group of bones in the hand, consists of the bones in the wrist. (8 bones/hand)
  6. Phalanx
    • Singular of phalanges-
    • Numbered 1-5, (Thumb-->Pinkie)
    • Digits 2-5 are each composed of three phalanges. (distal, middle, & proximal)
    • Digit 1 (thumb) composed of only 2. (distal & proximal)
    • Each phalanx consists of 3 parts. (head, body, & base)
  7. Joints of the Hand
  8. Forearm
    Radius (lateral/thumb side) & Ulna (medial side)
  9. Styloid Processes
    Small conical projections, located at the extreme distal ends of both the radius and the ulna.
  10. Ulnar Notch
    A small depression on the medial aspect of the distal radius. The Head of the ulna fits into the UN to form the distal radioulnar joint.
  11. Olecranon Process
    Beaklike process of the proximal ulna. Can be palpated easily on the posterior aspect of the elbow joint.
  12. Coronoid Process
    Beaklike process of the proximal ulna. Not the olecranon.
  13. Coronoid Tubercle
    The medial margin of the coronoid process opposite the radial notch (lateral).
  14. Trochlear Notch
    The large concave depression, or notch, that articulates with the distal humerus. (semilunar notch)
  15. Radial Notch
    The small, shallow depression located on the lateral aspect of the proximal ulna.
  16. Humeral Condyle
    The expanded distal end of the humerus. The articular portion is divided 2 parts: the trochlea (medial condyle) and the capitulum (lateral condyle).
  17. Trochlea
    One of the parts of the articular portion of the humeral condyle. Shaped like a pulley or spool: it has two rimlike outer margins and a smooth depressed center portion (trochlear sulcus). It is located more medially and articulates with the ulna.
  18. Capitulum
    • One of the parts of the articular portion of the humeral condyle.
    • (meaning "little head"), is located on the lateral aspect and articulates with the head of the radius
  19. Lateral Epicondyle
    The small projection on the lateral aspect of the distal humerus above the capitulum.
  20. Medial Epicondyle
    Larger and more prominent than the lateral and is located on the medial edge of the distal humerus.

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