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NPTE MS > Shoulder > Flashcards

Shoulder Flashcards

1
Q

Humerus - articular surface is covered with

A

hyaline cartilage

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2
Q

Humerus - head is retroverted

A

20 to 30 degrees

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3
Q

Humerus - longitudinal axis of the head is

A

135 degrees from axis of neck

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4
Q

Scapula - sits over

A

2nd to 7th ribs

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5
Q

Scapula - lateral angle has the

A

glenoid fossa which faces ant, lat, sup

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6
Q

Scapula - glenoid fossa - allows for

A

freer ROM in abduction and flexion

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7
Q

Scapula - glenoid fossa - con___

A

Concave fossa receives convex humeral head

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8
Q

Clavicle - links

A

Manubrium to acromion

Connects shoulder complex to axial skeleton

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9
Q

GH joint - articulations

A

Convex humeral head with concave glenoid fossa

Glenoid fossa is shallow

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10
Q

Sternoclavicular joint - articulations

A

Convex (sup/inf) and Concave (ant/post) articulates with reciprocal shape of sternum

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11
Q

Sternoclavicular joint - articulations are covered with

A

fibrocartilage

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12
Q

Scapular elevation

A

Trap (upper)
Levator scap
Rhomboids (maj and min)

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13
Q

Scapular depression

A 
Trap (lower)
SA
Pec minor
Lat dorsi
Pec major (lower)
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14
Q

Scapular abduction/protraction

A

Pec major and minor

SA

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15
Q

Scapular adduction/retraction

A

Rhomboids major and minor

Trap

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16
Q

Upward scapular rotation

A

Trap (up and low)

SA (up and low)

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17
Q

Downward scapular rotation

A

Levator scap
Rhomboid maj and min
Pec minor

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18
Q

Arm abduction

A

Deltoid

Supraspinatus

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19
Q

Arm adduction

A

Lat dorsi
Pec major (up and low)
Teres major
Coracobrachialis

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20
Q

Arm flexion

A

Pec major (up and low)
Deltoid (ant)
Coracobrachialis
Biceps brachii

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21
Q

Arm extension

A 
Lat dorsi
Pec major (up and low)
Deltoid (post)
Triceps (long)
Teres major
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22
Q

Arm IR

A 
Lat dorsi
Pec major (up and low)
Deltoid (ant)
Teres major
Subscapularis
23
Q

Arm ER

A

Deltoid (post)
Infraspinatus
Teres minor

24
Q

Spinal accessory innervates

A

Upper trap

25
Q

Medial pectoral innervates

A

Pec minor

26
Q

Lateral pectoral innervates

A

Pec major

27
Q

Long thoracic innervates

A

SA

28
Q

Dorsal scap innervates

A

Levator scap

Rhomboids

29
Q

Suprascapular innervates

A

Supraspinatus

Infraspinatus

30
Q

Axillary innervates

A

Deltoid and teres minor

31
Q

Musculocutaneous innervates

A

Coracobrachialis

32
Q

Thoracodorsal innervates

A

Latissimus dorsi

33
Q

Subscapular innervates

A

Teres major

Subscapularis

34
Q

Capsule - attaches where

A

Med - to glenoid margin, labrum, coracoid process

Lat - humeral anatomical neck and descends 1cm on shaft

35
Q

Capsule - supported by

A

Tendons of supraspinatus, infraspinatus, teres minor, subscap and long head of triceps

36
Q

Capsule - where is it least supported and most lax

A

Inferiorly

37
Q

Coracohumeral ligament goes from

A

Base of coracoid process to greater and lesser tubercle of humerus

38
Q

Primary function of coracohumeral ligament

A

Reinfoce biceps tendon
Reinforce superior capsule
Prevent caudal dislocation of humerus
Taut with ER

39
Q

Coracoacromial ligament - Runs from

A

Coracoid to acromion

40
Q

Glenohumeral ligament - reinforces what

A

Anterior GH capsule

41
Q

Glenohumeral ligament consists of what

A 
Three bands (sup, mid, inf) 
Located on anterior GH joint
42
Q

Transverse humeral ligament - where is it

A

Broad band passing over top of bicipital groove

43
Q

Transverse humeral ligament - acts as

A

retinaculum for long biceps tendon

44
Q

Labrum - is a

A

fibrocartilaginous ring that deepens the glenoid fossa

45
Q

Labrum - attached to

A

Capsule sup and inf

To long head of biceps sup

46
Q

Labrum - internal surface is covered with

A

articular cartilage

Thicker peripherally and thinner centrally

47
Q

Labrum - aids in

A

Lubrication and serves to protect the bone

48
Q

Bursae - primary one involved in pathology

A

Subacromial - located between deltoid and capsule

Also runs under acromion and coracoacromial ligament btw supraspinatus tendon

49
Q

Biomechanics - GH joint - with flexion

A

Convex on concave (opposite) - head of humerus moves inferiorly

50
Q

Biomechanics - elevation at GH joint - what happens

A

At about 75 degrees of elevation, ER occurs preventing compression of greater tubercle against acromion

51
Q

Scapulohumeral rhythm is

A

Ratio of movement of GH with the scapulothroacic joint

52
Q

Scapulohumeral rhythm - with 180 degrees of abduction what is ratio of movement between the two joints

A

2:1

120 degrees at GH and 60 at scapulothoracic

53
Q

Scapulohumeral rhythm - first 30-60 degrees of elevation occurs at which joint

A

GH

54
Q

Requirements for full elevation

A 
1 Scapular stabilization
2 Inferior glide of humerus
3 ER of humerus
4 Rotation of clavicle at sternoclavicular joint 
Scapular abduction and ER of AC joint
Straightening of thoracic kyphosis

NPTE MS (29 decks)

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