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Functional > Shoulder Complex > Flashcards

Shoulder Complex Flashcards

1
Q
A
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2
Q

Motions at the scapulothoracic joint

A

-elevation
-depression
-retraction
-protraction
-upward rotation
-downward rotation

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3
Q

motions at the GH joint

A

-abduction
-adduction
-flexion
-extension
-external rotation
-internal rotation

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4
Q

sternoclavicular joint type

A

synovial

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5
Q

sternoclavicular joint shape

A

saddle

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6
Q

clavicle is convex in what direction and concave in what direction

A

convex superior/inferior
concave anterior/posterior

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7
Q

CPP of SC joint

A

full elevation

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8
Q

LPP of SC joint

A

arm at the side

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9
Q

SC Elevation: plane of motion and axis

A

Rotation in frontal plane around a sagittal axis

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10
Q

SC Elevation roll and glide of clavicle and sternum

A

convex end of clavicle rolls superiorly and glides inferiorly on the sternum

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11
Q

maximal elevation of SC joint

A

45 degrees

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12
Q

Protraction of SC joint: plane of motion and axis

A

transverse plane motion with vertical axis

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13
Q

Protraction of SC joint: roll and glide

A

concave clavicle rolls and glides anterior on the sternum

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14
Q

Protraction of SC joint: amount of motion

A

15-30 degrees

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15
Q

Retraction of SC joint: plane of motion and axis

A

concave surface of clavicle rolls and glides posterior on the sternum

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16
Q

Retraction of SC joint: amount of motion

A

15-30 degrees

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17
Q

Rotation of SC joint: plane and axis

A

longitudinal plane sagittal axis

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18
Q

Rotation of SC joint: direction of rotation

A

superior clavicle rotates posteriorly due to tension on the coracoclavicular ligament

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19
Q

Rotation of SC joint: amount of motion

A

rotates 20-35 degrees

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20
Q

Stabilizing structures of the SC joint

A

-capsule
-sternoclavicular ligaments
-interclavicular ligaments
-costoclavicular ligaments
-articular discs
-muscles

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21
Q

function of Ant. and Post. sternoclavicular ligaments

A

-reinforce capsule
-limit ant/post movement of clavicle

22
Q

interclavicular ligament: location and function

A

-cross superior aspect of SC joint
-attach to medial ends of clavicle
-provide superior joint stability

23
Q

costoclavicular ligaments: location and function

A
  • attach first rib to inferior surface of clavicle
    -check elevation of the clavicle on the first rib
24
Q

articular disc: location and function

A

-fibrocartilage that divides joint into med and lat cavities
- shock absorption
-provides stability

25
Q

stabilizing muscles of the SC joint

A

sternocleidomastoid
sternothyroid
sternohyoid

26
Q

AC joint type

A

plane synovial joint (3 degrees of freedom)

27
Q

shape of joint surfaces of AC joint

A

sometimes concave sometimes convex (don’t need to know arthrokinematics)

28
Q

CPP of AC joint

A

90 degrees of ABD

29
Q

LPP of AC joint

A

arm at the side

30
Q

upward rotation of AC joint: movement of acromion to clavicle

A

acromion moves up and outward in relation to the clavicle

31
Q

upward rotation of AC joint: amount of motion

A

up to 30 degrees with arm elevation

32
Q

downward rotation of AC joint: movement of acromion to clavicle (include axis)

A

acromion moves down and inward in relation to the clavicle, sagittal axis

33
Q

Transverse plane movements of AC joint: axis

A

vertical

34
Q

Transverse plane movements of AC joint: motion of the scapula

A

medial border of scapula moves closer or further away from the thorax (IR and ER)

35
Q

Sagittal plane movements of AC joint: axis

A

frontal axis

36
Q

Sagittal plane movements of AC joint: motion of scapula

A

inferior angle of scapula tips away or towards thorax (ant and post tilting)

37
Q

stabilizing structures of the AC joint

A

-superior and inferior AC ligaments
-coracoclavicular ligament
-articular disc
-muscles

38
Q

superior and inferior acromioclavicular ligaments: location and function

A

-attaches tot he acromion and clavicle
-reinforce the AC joint capsule

39
Q

coracoclavicular ligaments: location and function

A
  • bind clavicle to coronoid process of scapula
    -control vertical joint stability
    -check upward rotation
    -check medial displacement of clavicle
    -create longitudinal rotation of clavicle
40
Q

coracoclavicular ligaments: parts

A

trapezoid - lateral portion
conoid - medial portion

41
Q

what is a step deformity at the AC joint?

A

Acromioclavicular joint dislocation occurs when the clavicle separates from the scapula.

42
Q

stabilizing structures of the AC joint: muscles

A

upper trapezius
deltoids

43
Q

Location of the scapulothoracic “joint”

A

between 2nd and 7th ribs about 6 cm from the spinous processes

44
Q

movements at the scapulothoracic “joint”

A

-elevation
-depression
-retraction
-protraction
-upward rotation
-downward rotation

45
Q

elevation of the scapula: prime movers

A

-upper trapezius
-levator scapulae
-rhomboid minor
-rhomboid major

46
Q

depression of the scapula: prime movers

A

-subclavius
-pectoralis minor
-pectoralis major (lower fibers)
-lower trapezius
-serratus anterior (lower fibers)
-latissimus dorsi (lower fibers)

47
Q

retraction of the scapula: prime movers

A

-rhomboid minor
-rhomboid major
-middle fibers of trapezius
-latissimus dorsi (upper fibers)

48
Q

protraction of the scapula: prime movers

A

-pectoralis minor
-pectorals major
-serratus anterior

49
Q

upward rotation of the scapula: prime movers

A

-upper trapezius
-lower trapezius
-serratus anterior

(60 degrees of scapular rotation available at ST joint)

50
Q

downward rotation of the scapula: prime movers

A

-levator scapulae
-rhomboids major and minor
-pectoralis minor
(pectoralis major (lower fibers) and latissimus dorsi)

51
Q

Function of scapular movement

A

-orientates glenoid fossa for optimal contact with the head of the GH
-adds range to arm elevation
-provides stable base for GH movements

Functional (4 decks)

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