Shoulder Flashcards Preview

PT 506 Kinesiology > Shoulder > Flashcards

Flashcards in Shoulder Deck (64):
1

ER base position range

40-60 degrees

2

ER 90 Abd range

90-100 degrees

3

IR 90 Abd

45-60 degrees

4

Flexion ROM

170-180 degrees

5

Abduction ROM

170-180 degrees

6

Scaption ROM

170-180 degrees

7

Function Internal Rotation ROM

T5 spinous process

8

Functional External Rotation ROM

T3 spinous process

9

Horizontal Abduction ROM

120-140 degrees
Arm starts in front

10

Horizontal Adduction ROM

40-60 degrees
Arm starts in front

11

Extension ROM

60-80 degrees

12

Upward Rotation contributes to stability by...

Using the glenoid as a buttress
Using the Coracohumeral ligament and superior glenohumeral ligaments

13

Downward rotation of scapula is...

Pathologic

14

Scapular dumping

Relaxation of CH & SGHL ligaments
Potential for false positive sulcus test
Inappropriate diagnosis of Multidirectional instability

15

AMBRI

Atraumatic, Multidirectional, Frequently bilateral, responds to rehabilitation, rarely requires Inferior capsular shift

16

TUBS

Traumatic Unilateral Lesion w/ Bankart lesion and usually requires surgury

17

Sagittal Plane Static posture scapula

Anterior tilt 9-20 degrees

18

What role would an exaggerated thoracic kyphosis and abnormally elevated position of the scapula play in sagittal plane posture of the bone

Both increase anterior tilt of the scapula, probably increase probability of inpingement

19

External impingement

Compression of bursal side of muscle

20

Internal impingement

Compression on underside of muscle

21

Scapular Plane

30 degrees anterior to the frontal plane

22

Scapulo-clavicular angle

50 degrees
Angle from scapular plane to clavicle

23

Clavicular retraction angle

20 degrees
Angle from sternal head to acromial head

24

Five motions of the scapula

Elevation/Depression
Protraction/Retraction
Anterior/Posterior Tilt
Medial/Lateral rotation
Upward/downward Rotation

25

Anterior/Posterior Tilt coupled with

Protraction/Retraction
Upward/Downward rotation

26

Medial rotation

Directs glenoid medially

27

Lateral Rotation

Directs glenoid laterally

28

Scapular Winging

Posterior displacement of medial border of scapula
Serratus Anterior Pathology
Long thoracic nerve

29

Upward/Downward scapular rotation coupled with...

Clavicular elevation/Depression

30

Upper extremity elevation motions

Scapular: Abduction, Elevation, Medial rotation, Anterior tipping, Upward rotation
Clavicular: Elevation, Posterior rotation,

31

AC joint structure

Convex lateral clavicle & concave acromion
Synovial joint with fibrocartilagenous disc
Stabilized by conoid, trapezoid, AC ligaments

32

AC Joint motion

Anterior/Posterior Tipping
Medial/Lateral Rotation
Upward/Downward rotation

33

SC joint structure

Synovial w/ articular disc
Only UE boney linkage to axial skeleton

34

SC joint motions

Elevation/Depression
Protraction/Retraction
Posterior/Anterior Rotation

35

Frontal Plane SC joint

Convex clavicle on
Concave sternum

36

Saggital Plane SC joint

Concave Clavicle on
Convex sternum

37

SC joint elevation

Superior Roll Inferior glide 45 degrees from neutral

38

SC Depression

Inferior Roll Superior glide 15 degrees from neutral

39

SC joint retraction

Posterior roll posterior slide
15 degrees

40

SC joint protraction

Anterior Roll anterior slide
15 degrees

41

Posterior SC joint rotation

Posterior rotation coupled with scapular upward rotation
30-55 degrees

42

Glenoid Cavity

1/4 to 1/3 surface of humeral head
Greater concavity S:I than A:P
A:P instability relative to S:I

43

Humeral Head angle of inclination

130-150 degrees

44

GH elevation ROM

0-120 degrees

45

ER during UE elevation

Prevents impingement of greater tubercle against acromion
Provides greater humeral head articulation

46

Scapulohumeral Rhythm purpose

Increase elevation ROM
Inferior stability of GH joint
Maintain optimum length tension relationship for mm.

47

Serratus vs. Trapezius Abduction

Trap more important than serratus
Serratus paralysis ROM is still full
Trap paralysis ROM is 75 degrees

48

Serratus vs. Trapezius Flexion

Serratus more important than trap
Trap paralysis ROM is still full
Serratus paralysis reduced ROM
Trap can only produce 20 degrees UR in this plane

49

GH stability

Negative intrarticular pressure
Labral concavity
Capsular constraint mechanism
Scapulohumeral muscles
Capsuloligamentous restraint

50

Negative Intrarticular Pressure

-42cm H20
Venting produces immediate inferior subluxation
Reduced force is necessary to translate humeral head in other directions

51

Labrum Concavity Compression

Intact labrum the GH joint resists dislocation forces up to 64% of compressive loads
20% reduction in effect with labrum removed

52

Stability ratio (%)

(Translational force/ Compressive load) X 100

53

Scapulohumeral Muscle contraction

Component forces compress humeral head into the glenoid
90% body weight at 90 degrees of elevation

54

Soft Tissue Buttress

Scapulohumeral muscle centers the humeral head in the glenoid

55

Capsular Constraint Mechanism

End range osteokinematic motion will take the slack out of ligament or capsule
Direction of force is opposite to anatomical location

56

Tight Anterior Capsule

Posterior humeral head translation at endrange

57

Capsuloligamentous structures

SGHL
MGHL
IGHL-3 bands (Anterior, Axillary pouch, Posterior)
CHL

58

Resists flexion w/ External Rotation

Anterior coracohumeral ligament

59

Resists Flexion w/ internal rotation

Middle posterior capsule

60

Resists Abduction w/ external rotation

Posterior Coracohumeral ligament

61

Resists abduction w/ internal rotation

Inferior posterior capsule

62

Anatomical position primary stabilizer

SGHL and MGHL

63

45 degrees scaption primary stabilizer

MGHL resists anterior translation

64

90 scaption primary stabilizer

IGHL anterior band anterior translation
IGHL posterior band posterior translation