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MSK_Y1_MT1 > MSK_MT1_DSA4 (Clavicle, Scapula & Humerus = Glenohumeral Joint.) > Flashcards

MSK_MT1_DSA4 (Clavicle, Scapula & Humerus = Glenohumeral Joint.) Flashcards

1
Q

Which part of the clavicle does the costoclavicular ligament attach to?

A
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2
Q

Which artery gives rise to the nutrients branches of the clavicle?

A

suprascapular artery

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3
Q

Which bony structure does the clavicle articulate with medially?

A

manubrium of sternum

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4
Q

Which part of the clavicle does the interclavicular ligament attach to?

A

sternal end of the clavicle

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5
Q

Which bony structure does the clavicle articulate with laterally?

A

Acromion of Scapula

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6
Q

Which of the following muscles attaches to the anterior surface of the clavicle?

A

deltoid

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7
Q

Which bone is responsible for transmitting traumatic impacts from the upper limb to the axial skeleton?

A

clavicle

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8
Q

What bony structures does the scapula articulate with? (2)

A
  1. acromeal facet of the clavicle
  2. body of the humerous
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9
Q

Bones of shoulder Girdle are

A

formed by:

  1. the scapulae, posteriorly
  2. the clavicles anteriorly

3. completed anteriorly by the manubrium of the sternum (axial skeleton).

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10
Q

Function of Shoulder Girdle is

A

Connecting the upper limbs → axial skeleton

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11
Q

Joints of Shoulder Girdle are (3)

A
  1. Acromioclavicular (AC) joint
  2. Sternoclavicular (SC) joint
  3. Glenohumeral joint
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12
Q

Acromioclavicular (AC) joint

A
  • synovial joint
  • connects to ateral part of the acromion
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13
Q

Ligaments of the AC Joint (4)

A
  1. acromioclavicular ligament, the sleevelike loose fibrous
  2. trapezoid ligament (nearly horizontal)
  3. conoid ligament (vertical)
  4. coracoclavicular ligament.
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14
Q

Arteries of the AC Joint (2)

A
  1. suprascapular
  2. thoracoacromial
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15
Q

Nerves of the AC Joint (3)

A
  1. suprascapular
  2. lateral pectoral
  3. axillary nerves
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16
Q

Sternoclavicular joint (SC joint)

A

ball and socket joint

discs = shock absorber (attached by sternoclavicular ligaments)

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17
Q

Ligaments of the SC joint (4)

A
  1. anterior sternoclavicular
  2. posterior sternoclavicular
  3. the interclavicular ligament
  4. costoclavicular ligament.
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18
Q

Artries of the SC Joint

A
  1. internal thoracic
  2. suprascapular
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19
Q

Nerves of the SC Joint

A
  1. medial suprascapular nerve
  2. the nerve to the subclavius muscle
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20
Q

Glenohumeral joint

A

ball and socket type of synovial joint

movements include:

  1. flexion
  2. extension
  3. abduction
  4. adduction
  5. rotation (medial and lateral rotation)
  6. circumduction.
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21
Q

Ligaments of the Glenohumeral joint

A
  1. humeral ligament
  2. coracoacromial ligament
  3. glenohumeral ligament.
22
Q

Acromial facet of clavicle

23
Q

Sternal articular surface of clavicle

24
Q

Conoid tubercle of clavicle

25
Q

Groove for subclavius muscle

26
Q

Impression for costoclavicular ligament

27
Q

Trapezoid line of clavicle

28
Q

coracoclavicular ligament attach to?

A
  1. trapazoid line of the clavicle
  2. conoid tubericle of clavicle
29
Q

shaft of clavicle orienation?

A

medial 2/3: convex anteriorly

lateral 1/3: flattened and concave anteriorly

30
Q

Sternoclavicular Joint Overview

31
Q

Scapula

A

posterior between the 2nd and 7th ribs

acromial of clavicle + head humerus.

32
Q

3 large bony processes of scapula

A
  1. spine
  2. acromion
  3. coracoid
33
Q

superior border of scapula

A

thin, superior edge

34
Q

scapular notch

A

lateral aspect of the superior border.

35
Q

angles of scapula

A
  1. superior = superior and medial borders
  2. inferior = seventh rib and the spine of the Th 7
36
Q

glenoid cavity or fossa

A

“pit” for the head of the humerus

1. glenoid labrum = surrounds outside the glenoid to deepen the joint cavity.

  1. supraglenoid tubercle = apex (top) of glenoid cavity
  2. infraglenoid tubercle = immediately inferior (bottom) to the glenoid
37
Q

greater scapular notch

A

connects the supraspinous —> infraspinous fossa

38
Q

subscapular fossa

A

largest part of scapualr surface (shallow concave)

39
Q

coracoid process

A

“crow’s beak”

thick structure that projects anterolaterally

40
Q

Dropped Shoulder and Winged Scapula

A

caused by:

  1. paralysis of the trapezius (accessory nerve dysfunction)
  2. paralysis serratus anterior (lateral thoracic nerve dysfunction)
41
Q

Humerous Bony Features

A

1. greater tubercle: where rotator cuff muscles attach

  • (supraspinatus, infraspinatus and teres minor)

2. intertubercular groove = bicepts attach

3. lesser tubercle = subscapularis muscle attach

4. surgical neck = weakest part of bone

42
Q

lower humerous features

A
  1. lateral and medial epicondyles = attach the forearm muscles.
    * groove for the ulnar nerve BELOW the medial epicondyle
  2. wide groove of the radial nerve = rear, middle, lateral side
  3. deltoid tuberosity = attaches deltoid muscle = lateral surface of the body
43
Q

SC Joint Forward Movement

A

Controlled by:

44
Q

SC Joint Backward Movement

A

Controlled by:

45
Q

SC Joint Elevation Movement

A

Controlled by:

46
Q

SC Joint Depression Movement

A

Controlled by:

47
Q

Anterior dislocation of SC Joint

A

In general RARE : because of strong costoclavicular ligament holds clavicle —> first costal cartilage

  1. medial end of the clavicle projecting forward beneath the skin
  2. pulled upward by the sternocleidomastoid muscle
48
Q

Posterior Dislocation of SC Joint

A

In general RARE : because of strong costoclavicular ligament holds clavicle —> first costal cartilage

  • follows direct frontal trauma = drives the clavicle backward
  • MORE SERIOUS = displaced clavicle may press on the trachea, the esophagus, and major blood vessels of neck
49
Q

transverse humeral ligament of GH Joint

A
  1. strengthens
  2. connects the two tuberosities
  3. holds the tendon of biceps muscle in place.
50
Q

Synovial membrane of GH Joint

A
  1. lines the capsule
  2. attached to the margins of the cartilage
51
Q

Bursae

A

a fluid-filled sac lined by synovial membrane

provides a cushion and reduce friction of shoulder and arms

MSK_Y1_MT1 (13 decks)

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