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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
what is the glenoid labrum
fibrocartilaginous elevation surrounding glenoid cavity; assists in increasing depth of socket
26
what are the glenohumeral bands or ligaments
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
27
What do the glenohumeral bands prevent
prevent anterior and posterior inferior dislocation
28
arterial supply for glenohumeral joint
anterior and posterior circumflex humeral aa | suprascapular a
29
nerve supply
suprascapular n axillary lateral pectoral n
30
joint type of elbow
synovial and hinge
31
articular elements of elbow joint
trochlea of humerus with trochlear notch of ulna capitulum of humerus with head of radius head of radius with radial notch of ulna
32
special features ofelbow joint
elbow joint and the proximal radioulnar joint share a common synovial cavity
33
ligaments of elbow joint
articular capsule ulnar collateral lig radial collateral lig
34
parts of ulnar collateral lig
``` anterior part(strongest) posterior part (weakest) oblique, intermediate, transverse part ```
35
where is the anterior part of ulnar collateral lig
medial epicondyle of humerus to tubercle on coronoid process of ulna
36
where is the posterior part of ulnar collateral lig
medial epicondyle of humerus to medial edge of olecranon process ulna
37
describe the oblique part of ulnar collateral lig
attaches to medial aspect of ulna to deepen socket for tochlea
38
describe radial collateral lig
from lateral epicondyle to annular log of the radius
39
describe arterial supply of collateral
proided by collateral branches of the brachial, radial and ulnar aa
40
what is the nerve supply of elbow joint
musculocutaneous, radial and also ulnar and median
41
joint type of radioulnar joint
synovial pivot
42
articular elements of radioulnar joint
head of radius and radial notch of ulna
43
special features of radioulnar joint
shares joint capsule with elbow joint | strenthened by attachments of the anterior capsular and lateral collateral ligaments of the elbow joint
44
ligaments of radioulnar joint
annular lig
45
where is the annular lig
encircles head of radius and attaches to ulna above and inferior to the radial notch
46
arterial supply of radioulnar lig
collateral branches of the brachial, radial and ulnar aa
47
innervation of radioulnar lig
musculocutaneous, radial, and also ulnar and median
48
type of joint for distal radio-ulnar joint
synovial-pivot
49
articular elements of distal radio-ulnar joint
head of ulna | ulnar notch of radius
50
ligaments of distal radio-ulnar joint
capsular lig
51
special feature of distal radio-ulnar joint
strong fibrocartilaginous articular disk
52
what is the function of articular disk of distal radio-ulnar joint
distal radius to ulnar styloid process. | articulation of wrist and maing uniting structure of this joint
53
arterial supply of distal radio-ulnar
anterior and posterior interosseous aa
54
nerve supply of distal radio-ulnar
anterior interosseous n (median) | posterior interosseous n (radial)
55
What structure resists the radius and ulnar bones from being forced in opposite directions
interosseous membrane
56
joint type of wrist joint
synovial | ellipsoidal and condyloid
57
articular elements of wrist joint
distal radius and articular disk of distal radioulnar joint | scaphoid, lunate, triquetrum, pisiform not at all
58
arterial supply of wrist joint
branches from palmar and dorsal carpal arches
59
nerve supply of wrist joint
median (anterior interosseus n), radial (posterior interosseous n) and ulnar N
60
what type of joint are the intercarpal joints
synovial plane
61
what are the articular elements of the intercarpal joints
articular surface between carpals of proximal row, articular surface between carpals of distal row articular surfaces beween proximal and distal row
62
what is a mid carpal joint
no interosseous ligament between proximal and distal row of carpals- increased flexibility
63
what is the arterial supply of the intercarpal joints
palmar and dorsal carpal networks
64
inn to intercarpal joints
median (ant interosseous) and radial (post interosseous) and deep ulnar a
65
joint type of carpometacarpal and inter metacarpal joints
synovial- plane(gliding)
66
articular elements of carpometacarpal joint
distal row of carpals and metacarpals
67
describe thumb joint
saddle type synovial- own joint cavity with loose capsule to allow movement
68
arterial supply to carpometacarpal and intermetacarpal joints
dorsal and palmar metacarpal aa
69
nerve supply to carpometacarpal and inter metacarpal joints
branches from median ,radial and ulnar nn
70
joint type of metacarpophalangeal joints
synovial and condyloid
71
articular elements of the metacarpophalangeal joints
heads of all metacarpals | bases of 5 proximal phalanges
72
what strengthends the metacarpophalangeal joints distally
passage of tendons of extensor digitorum( digits 2-5) and extensor pollicis longus and brevis(thumb)
73
what is the arterial supply of metacarpophalangeal joints
branches of digital aa from the superfical palmar arterial arch
74
what is the innervation for metacarpophalangeal joints
digital branches from medial and ulnar nn
75
joint type of interphalangeal joints
synovial and hinge
76
articular elements of interphalangeal joints
head of one phalanx to the base of the more distal phalanx
77
what strenghtens IP dorsally
passage of extensor expansion
78
arterial supply of IP joints
branches of proper digital aa
79
nerve supply of IP joints
digital branches from median and ulnar nn

MSK Exam II (10 decks)

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