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MS 1 > Bones and Joints of the Shoulder > Flashcards

Bones and Joints of the Shoulder Flashcards

1
Q

What are the articulating surfaces of the GH joint?

A

glenoid fossa and humeral head

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2
Q

What is the classification of the GH joint?

A

diarthrotic, synovial, ball and socket

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3
Q

What are the movements of the GH joint?

A

Flex/Ex - sagittal plane, med/lat axis;
ABD/ADD - frontal plane, AP axis;
Int/Ext rot., N/A, mech. axis;
Horizontal ABD/ADD, transverse plane, vertical axis.

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4
Q

What are the ligaments of the GH joint?

A

coracoacromial
glenohumeral
transverse humeral
labrum
coracohumeral
capsule
SITS mm tendons

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5
Q

What does the coracoacromial ligament do?

A

it completes the acromial arch.
it prevents superior displacement of the humerus.

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6
Q

True or false - the coracoacromial ligament is extracapsular?

A

True

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7
Q

What are the bands of the GH ligament?

A

superior, middle, inferior

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8
Q

The GH ligament limits what?

A

External rotation, horizontal ABD/ADD

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9
Q

What does the transverse humeral ligament limit?

A

limits lateral displacement of biceps tendon.

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10
Q

What is the purpose of the labrum

A

line and deepen the glenoid fossa

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11
Q

What are the 2 bands of the coracohumeral ligament?

A

superior and inferior

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12
Q

What does the coracohumeral ligament limit?

A

external rotation, supports against gravity

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13
Q

Where is the capsule of the GH joint?

A

the rim of the glenoid fossa and anatomic humeral neck

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14
Q

What are the articulating surfaces of the sternoclavicular joint?

A

the sternal facet of the medial clavicle; superior lateral manubrium; superior costocartilage of rib 1

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15
Q

what are the movements permitted in the in sternoclavicular joint?

A

elevation/depression: frontal plane, AP axis
protraction/retraction: transverse plane, vertical axis
rotation: no plane, mech axis
ABD/Flex terminal ranges
inspiration/expiration

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16
Q

Describe the capsule of the SC joint

A

Relatively lax and thin above and below the joint

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17
Q

What are the ligaments of the SC joint?

A

disc
SC lig.
costoclavicular lig.
interclavicular lig

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18
Q

What does the SC ligament limit?

A

anterior and posterior displacement of the clavicle

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19
Q

what does the costoclavicular ligament limit?

A

clavicular elevation
protraction-retraction
controls shoulder gridle motion during the last 90 degrees of arm ABD

20
Q

how does the costoclavicular ligament attach

A

from the first rib to the clavicle above in an inferior medial to superior lateral orientation.

21
Q

how does the interclavicular ligament connect?

A

spans the sternal notch attaching medial clavicles

22
Q

what does the interclavicular ligament limit?

A

superior/inferior clavicular displacement.

23
Q

What is the joint classification of the SC joint?

A

multi-axial saddle synovial joint

24
Q

What are the articulating surfaces of the AC joint?

A

lateral clavicle and medial acromion

25
Q

What is the classification of the AC joint?

A

non-axial planer synovial joint

26
Q

What are the movements permitted in the AC joint?

A

protrac/retraction: transverse plane, vertical axis.
upward tip/tilt: sagittal plane, med/lat axis.
sup./inf. scapular rotation: frontal plane, AP axis

27
Q

What are the ligaments of the AC joint?

A

capsule (weak)
disc (usually gone by 40)
AC ligament
coracoclavicular
sup. transverse scapular lig.

28
Q

What does the AC ligament limit?

A

prevents overriding of one bone over the other.
limits distraction

29
Q

What does the coracoclavicular ligament limit?

A

posterior and superior clavicular displacement, controls scapular rotation during 1st 90 degree of arm ABD

30
Q

where does the superior transverse scapular ligament attach?

A

arches over the suprascapular notch

31
Q
A
32
Q

What are the bones of the shoulder girdle?

A

Clavicle and scapula

33
Q

What are the angles of the scapula?

A

Superior
Inferior
Lateral
Medial

34
Q

What are the borders of the scapula?

A

Superior
Medial (vertrbral)
Lateral (axillary)

35
Q

What are the processes of the scapula?

A

Acromion
Coracoid

36
Q

What are the tubercles of the scapula?

A

Supraglenoid
Infraglenoid

37
Q

What are the fossae of the scapula?

A

Supraspinous
Infraspinous
Subscapular
Glenoid

38
Q

Where is the suprascapular notch?

A

1/2 laterally on the superior border

39
Q

Where is thespine of the scapula?

A

Runs inferiomedial and divides the infra and supraspinous fossae

40
Q

What are the necks of the humerus?

A

Anatomical
Surgical

41
Q

What are the tubercles of the humerus?

A

Greater
Lesser

42
Q

What are the grooves of the humerus?

A

Intertubular/bicipital
Radial/spiral

43
Q

What is on the shaft of the humerus?

A

Deltoid tuberosity

44
Q

What are the supracondylar ridges of the humerus?

A

Medial - partial att. for common flexor tendon
Lateral - partial att. for common extensor tendon

45
Q

What are the epicondyles of the humerus?

A

Medial and lateral
Partial attachment for common flexor and extensor tendon

MS 1 (9 decks)

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