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MS 1 > Bones and Joints of the Upper Extremity > Flashcards

Bones and Joints of the Upper Extremity Flashcards

1
Q

What are the bones of the upper extremity?

A

humerus
radius
ulna

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2
Q

1/2 sphere, proximal end that articulates with the glenoid fossa to form GH joint is called what?

A

Head of the humerus

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3
Q

What are the fossae of the humerus?

A

radial
coronoid
olecranon
sulcus for ulnar nerve

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4
Q

What does the head of the radius articulate with?

A

The capitulum of the humerus

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5
Q

What fossa does the head of the radius fit into and where is it?

A

Radial fossa on anterior humerus

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6
Q

Where is the neck of the radius?

A

immediately distal to the head

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7
Q

Where is the radial/bicipital tuberosity?

A

distal to neck, anterior medial side in anatomical position.

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8
Q

Where is the pronator tubercle?

A

middle lateral surface of the radius

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9
Q

Where is Lister’s (dorsal) tubercle?

A

Posterior middle surface of distal radius

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10
Q

What are the grooves of the radius?

A

lateral to dorsal tubercle
medial to dorsal tubercle

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11
Q

What are the borders of the radius?

A

anterior
posterior
interosseus

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12
Q

Where is the radial styloid process?

A

distal lateral aspect

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13
Q

What forms the bony elbow?

A

olecranon process

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14
Q

What does the olecranon process articulate with?

A

olecranon fossa of the humerus

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15
Q

What is the anterior aspect of the olecranon?

A

trochlear notch

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16
Q

What does the trochlear notch articulate with?

A

trochlea of the humerus

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17
Q

What is the anterior inferior aspect of the trochlear notch?

A

coronoid process

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18
Q

What does the coronoid process articulate with?

A

coronoid fossa

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19
Q

What does the radial notch of ulna articulate with?

A

radial head

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20
Q

Where is the ulnar tuberosity?

A

on anterior surface of the ulna

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21
Q

What are the borders of the ulna?

A

anterior
posterior
interosseus

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22
Q

Where is the head of the ulna?

A

distal end

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23
Q

What does the distal end of the ulna articulate with?

A

articular cartilage

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24
Q

What are the bones of the carpals?

A

scaphoid
lunate
triquetrum
pisiform
trapezium
trapezoid
capitate
hamate

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25
Q

Which carpals articulate with the distal radius?

A

scaphoid
lunate

26
Q

What are the articulating surfaces of the radiohumeral joint?

A

concave surface of radial head and capitulum of humerus

27
Q

What are the articulating surfaces of the ulnohumeral joint?

A

trochlear notch of the ulna and trochlea of the humerus

28
Q

What movements are permitted by the ulnohumeral and radiohumeral joints? What axis and plane?

A

flex/ex
medial lateral axis
sagittal plane

29
Q

What are the ligaments of the radiohumeral and ulnohumeral joints?

A

capsule
medial/ulnar collateral
lateral/radial collateral

30
Q

What is the shape of the medial/ulnar collateral ligament?

A

triangular shaped

31
Q

what does the medial/ulnar collateral ligament limit?

A

valgus motion

32
Q

What is the shape of the lateral/radial collateral ligament?

A

fan shaped

33
Q

What does the medial/ulnar collateral ligament attach?

A

attaches medial humeral epicondyle to coronoid and olecranon process

34
Q

What does the lateral/radial collateral ligament attach?

A

attaches lateral humeral epicondyle to annular ligament of proximal radioulnar joint

35
Q

What motion does the lateral/radial collateral ligament limit?

A

varus motion

36
Q

What is the classification of the radiohumeral and ulnohumeral joint?

A

uniaxial hinge synovial joint

37
Q

What nerves innervate the radiohumeral and ulnohumeral joints?

A

musculotaneous
radial
ulnar

38
Q

What are the articulating surfaces of the proximal radioulnar joint?

A

edge of radial head
radial notch of ulna

39
Q

How much of the radial head articulates with the ulna at any one time?

A

1/5

40
Q

What is the classification of the proximal radioulnar joint?

A

uniaxial pivot synovial joint

41
Q

What are the movements of the proximal radioulnar joint (with axis and plane)?

A

supination and pronation
mechanical axis
no plane

42
Q

What are the ligaments of the proximal radioulnar joint?

A

capsule
annular ligament
oblique cord

43
Q

What nerves innervate the proximal radioulnar joint?

A

musculocutaneous
radial
ulnar

44
Q

What are the bursae of the elbow?

A

olecranon bursae
(subtendonous and subcutaneous)

45
Q

What are the fat pads of the elbow?

A

anterior and posterior fatpads

46
Q
A
47
Q

What are the articulating surfaces of the middle radio ulnar joint?

A

Interosseus border of the radius and ulna

48
Q

What is the classification of the middle radio ulnar joint?

A

Fibrous syndesmosis, amphiarthrodial joint

49
Q

What movements are permitted by the middle radioulnar joint?

A

Supination/pronation

50
Q

What are the ligaments of the middle raioulnar joint?

A

Interosseus membrane

51
Q

What movement does the interosseus membrane limit?

A

Supination and pronation

52
Q

What are the articulating surfaces of the distal radioulnar joint?

A

Head of ulnar
Ulnar notch of radius

53
Q

What is the classification of the distal radioulnar joint?

A

Uniaxial pivot synovial joint

54
Q

What are the movements permitted by the distal radioulnar joint?

A

Supination - pronation

55
Q

What are the ligaments of the distal radioulnar joint?

A

Capsule
Ant. and post. radioulnar lig
Triradiate cartilage/disc

56
Q

What movement does the ant./post. radioulnar ligament limit?

A

Anterior limits supination.
Posterior limits pronation

57
Q

What movement does the triradiate cartilage/disc limit?

A

Cushions impact between between carpals and radius and ulna.

58
Q

What nerves innervate the distal radioulnar joint?

A

Anterior (median) and posterior (radial) interosseus nerves.

59
Q

What are the articulating surfaces of the radiocarpal joint?

A

Distal radius and tricolor cartilage (concave)
Proximal row of carpal- scaphoid, lunate (and triqutrum in extreme ulnar deviation. (Convex)

60
Q

What is the classification of the radiocarpal joint?

A

Biaxial condyloid synovial joint

61
Q

What are the movements of the radiocarpal joint?

A

Flex/ex:
med/lat. axis; sag. plane
Radial/ulnar deviation:
Ant/post axis; frontal plane

MS 1 (9 decks)

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