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MSK Exam II > Joints > Flashcards

Joints Flashcards

1
Q

what type of joint is sternoclavicular

A

synovial and saddle

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2
Q

what are the articular elements of the sternoclavicular joint

A

manubrium, costal cartilage of 1st rib, sternal end of clavicle

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3
Q

ligaments of sternoclavicular joint

A

articular capsule, anterior and posterior sternoclavicular ligaments, interclavicular and costoclavicular

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4
Q

what is the special feature of the sternoclavicular joint

A

fibrocartilaginous articular disk to cushion clavicle on sternum to prevent upward and medial dislocation

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5
Q

what is the arterial supply of the sternoclavicular joint

A

branches from internal thoracic a, suprascap a (subclavian a), highest thoracic a, clavicular branch of thoracoacromial a (axillary a)

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6
Q

nerve supply of sternoclavicular joint

A

medial supraclavicular nerves (C3C4)

nerve to subclavius (C5C6)

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7
Q

joint type of acromioclavicular joint

A

synovial, plane (gliding)

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8
Q

what are the articular elements of the acromioclavicular joints

A

acromion process of scapula

lateral ends of clavicle

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9
Q

special feature of acromioclavicular joint

A

incomplete wedge shaped disk superior to capsule projects into joint cavity

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10
Q

ligaments of acromioclavicular joint

A

articular capsule
superior and inferior acromioclavicular ligaments
coracoclavicular lig

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11
Q

2 portions of coracoclavicular lig

A

conoid- medial attaches to conoid tubercle of clavicle

trapezoid- lateral, attaches superiorly to trapezoid line of clavicle

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12
Q

Where is the acromioclavicular joint strongest

A

where tendinous fibers of trapezius attach superiorly to the distal clavicle and acromion

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13
Q

what is the arterial supply to acromioclavicular joint

A

branches of thoracoacromial and lateral thoracic aa

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14
Q

What is the nerve supply to the acromioclavicular joint

A

supraclavicular nerves
lateral pec n
axillary n

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15
Q

What is the joint type of the glenohumeral joint

A

synovial and ball and socket

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16
Q

what are the articular elements of the glenhumeral joint

A

glenoid cavity of scapula and head of humerus

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17
Q

what are the ligaments of the glenhumeral joint

A

articular capsule
coracohumeral lig
coracoacromial lig
transverse humeral lig

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18
Q

What is the articular capsule function of glenohumeral joint

A

joint flexibility in all ranges. attaches to brim of glenoid cavity and anatomical neck of humerus

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19
Q

describe coracohumeral lig

A

arising from coracoid process to lateral anterior greater tubercle of humerus

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20
Q

what does the coracohumeral lig prevent

A

inferior dislocation

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21
Q

describe the coracoacromial lig

A

spans superior processes

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22
Q

what does the coracoacromial lig prevent

A

superior dislocation

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23
Q

describe the transverse humeral lig

A

anteriorly spans intertubercular groove to tendon of long head biceps

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24
Q

special features of glenohumeral joint

A

glenoid labrum

glenohumeral bands

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25
Q

what is the glenoid labrum

A

fibrocartilaginous elevation surrounding glenoid cavity; assists in increasing depth of socket

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26
Q

what are the glenohumeral bands or ligaments

A

3 bands (superior middle and inferior) seen on internal aspect of anterior wall of joint capsule. from anterior glenoid margin to lesser tubercle and anatomical neck

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27
Q

What do the glenohumeral bands prevent

A

prevent anterior and posterior inferior dislocation

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28
Q

arterial supply for glenohumeral joint

A

anterior and posterior circumflex humeral aa

suprascapular a

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29
Q

nerve supply

A

suprascapular n
axillary
lateral pectoral n

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30
Q

joint type of elbow

A

synovial and hinge

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31
Q

articular elements of elbow joint

A

trochlea of humerus with trochlear notch of ulna
capitulum of humerus with head of radius
head of radius with radial notch of ulna

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32
Q

special features ofelbow joint

A

elbow joint and the proximal radioulnar joint share a common synovial cavity

33
Q

ligaments of elbow joint

A

articular capsule
ulnar collateral lig
radial collateral lig

34
Q

parts of ulnar collateral lig

A 
anterior part(strongest)
posterior part (weakest)
oblique, intermediate, transverse part
35
Q

where is the anterior part of ulnar collateral lig

A

medial epicondyle of humerus to tubercle on coronoid process of ulna

36
Q

where is the posterior part of ulnar collateral lig

A

medial epicondyle of humerus to medial edge of olecranon process ulna

37
Q

describe the oblique part of ulnar collateral lig

A

attaches to medial aspect of ulna to deepen socket for tochlea

38
Q

describe radial collateral lig

A

from lateral epicondyle to annular log of the radius

39
Q

describe arterial supply of collateral

A

proided by collateral branches of the brachial, radial and ulnar aa

40
Q

what is the nerve supply of elbow joint

A

musculocutaneous, radial and also ulnar and median

41
Q

joint type of radioulnar joint

A

synovial pivot

42
Q

articular elements of radioulnar joint

A

head of radius and radial notch of ulna

43
Q

special features of radioulnar joint

A

shares joint capsule with elbow joint

strenthened by attachments of the anterior capsular and lateral collateral ligaments of the elbow joint

44
Q

ligaments of radioulnar joint

A

annular lig

45
Q

where is the annular lig

A

encircles head of radius and attaches to ulna above and inferior to the radial notch

46
Q

arterial supply of radioulnar lig

A

collateral branches of the brachial, radial and ulnar aa

47
Q

innervation of radioulnar lig

A

musculocutaneous, radial, and also ulnar and median

48
Q

type of joint for distal radio-ulnar joint

A

synovial-pivot

49
Q

articular elements of distal radio-ulnar joint

A

head of ulna

ulnar notch of radius

50
Q

ligaments of distal radio-ulnar joint

A

capsular lig

51
Q

special feature of distal radio-ulnar joint

A

strong fibrocartilaginous articular disk

52
Q

what is the function of articular disk of distal radio-ulnar joint

A

distal radius to ulnar styloid process.

articulation of wrist and maing uniting structure of this joint

53
Q

arterial supply of distal radio-ulnar

A

anterior and posterior interosseous aa

54
Q

nerve supply of distal radio-ulnar

A

anterior interosseous n (median)

posterior interosseous n (radial)

55
Q

What structure resists the radius and ulnar bones from being forced in opposite directions

A

interosseous membrane

56
Q

joint type of wrist joint

A

synovial

ellipsoidal and condyloid

57
Q

articular elements of wrist joint

A

distal radius and articular disk of distal radioulnar joint

scaphoid, lunate, triquetrum, pisiform not at all

58
Q

arterial supply of wrist joint

A

branches from palmar and dorsal carpal arches

59
Q

nerve supply of wrist joint

A

median (anterior interosseus n), radial (posterior interosseous n) and ulnar N

60
Q

what type of joint are the intercarpal joints

A

synovial plane

61
Q

what are the articular elements of the intercarpal joints

A

articular surface between carpals of proximal row, articular surface between carpals of distal row
articular surfaces beween proximal and distal row

62
Q

what is a mid carpal joint

A

no interosseous ligament between proximal and distal row of carpals- increased flexibility

63
Q

what is the arterial supply of the intercarpal joints

A

palmar and dorsal carpal networks

64
Q

inn to intercarpal joints

A

median (ant interosseous) and radial (post interosseous) and deep ulnar a

65
Q

joint type of carpometacarpal and inter metacarpal joints

A

synovial- plane(gliding)

66
Q

articular elements of carpometacarpal joint

A

distal row of carpals and metacarpals

67
Q

describe thumb joint

A

saddle type synovial- own joint cavity with loose capsule to allow movement

68
Q

arterial supply to carpometacarpal and intermetacarpal joints

A

dorsal and palmar metacarpal aa

69
Q

nerve supply to carpometacarpal and inter metacarpal joints

A

branches from median ,radial and ulnar nn

70
Q

joint type of metacarpophalangeal joints

A

synovial and condyloid

71
Q

articular elements of the metacarpophalangeal joints

A

heads of all metacarpals

bases of 5 proximal phalanges

72
Q

what strengthends the metacarpophalangeal joints distally

A

passage of tendons of extensor digitorum( digits 2-5) and extensor pollicis longus and brevis(thumb)

73
Q

what is the arterial supply of metacarpophalangeal joints

A

branches of digital aa from the superfical palmar arterial arch

74
Q

what is the innervation for metacarpophalangeal joints

A

digital branches from medial and ulnar nn

75
Q

joint type of interphalangeal joints

A

synovial and hinge

76
Q

articular elements of interphalangeal joints

A

head of one phalanx to the base of the more distal phalanx

77
Q

what strenghtens IP dorsally

A

passage of extensor expansion

78
Q

arterial supply of IP joints

A

branches of proper digital aa

79
Q

nerve supply of IP joints

A

digital branches from median and ulnar nn

MSK Exam II (10 decks)

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