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Flashcards in Shoulder Deck (35):
1

What does the pectoral girdle consist of?

the clavicle and scapula, and the cervicoaxillary canal (conduit)

2

Movement of the clavicle (degrees)

incline 40˚, depress 10˚, rotate on long axis, protract 30˚, retract 25˚

3

Movement of scapula (degrees)

elevation 40˚, depression 10˚, retract 20˚, protract 30˚, rotate up 20˚, rotate down 60˚, 1/3 of arm abduction

4

Coracoclavicular ligament consists of what two ligaments?

conoid ligament (medial) and trapezoid ligament (lateral)

5

Subscapularis

Attachment- subscapular fossa to lesser tubercle, tendon separated by subscapular bursa
Innervation- upper and lower subscapular nerves
Blood- subscapular artery

6

Subscapularis action

medial rotation, joint stabilization

7

Serratus anterior

Attachment- ribs 1-8 to medial border of scapula
Innervation- long thoracic nerve
Blood- lateral thoracic artery

8

Serattus anterior action

primary protractor

9

Subclavius

Attachment- 1st rib to costoclavicular ligament
Innervation- nerve to subclavius
Blood- clavicular branch of thoracoacromial artery

10

Subclavius action

depresses clavicle, stability

11

Pectoralis minor

Attachment- ribs 3-5 to costoclavicular ligament
Innervation- medial pectoral nerve
Blood- pectoral branch of thoracoacromial artery

12

Pectoralis minor action

depress, protract, downward rotation of scapula

13

Pectoralis major attachments

clavicular head- proximal clavicle
sternal head- lateral margin of first 7 ribs
abdominal head inserts on intertubercular groove

14

Pectoralis major innervation and blood supply

Innervation- medial and lateral pectoral nerves
Blood- pectoral branch of thoracoacromial artery

15

Pectoralis major action

medial rotation, protraction, elevation, adduction of humerus, delineates infraclavicular fossa

16

Teres major

Attachment- posterior inferior angle of scapula to medial lip of intertubercular groove, tendon posterior to latissimus dorsi with bursa between
Innervation- lower subscapular nerve
Blood- circumflex scapular artery

17

Teres major action

extends, adducts, medially rotates arm (SAME AS LATISSIMUS DORSI)

18

Supraspinatus

Attachment- supraspinous fossa to greater tubercle of humerus
Innervation- suprascapular nerve
Blood- suprascapular artery

19

Supraspinatus action

initiates abduction of arm (0-15˚), some medial rotation, stabilize joint

20

Infraspinatus

Attachment- infraspinous fossa to middle facet of greater tubercle of humerus
Innervation- suprascapular nerve
Blood- suprascapular artery

21

Infraspinatus action

lateral rotates humerus, stabilizes shoulder joint

22

Teres minor

Attachment- lateral border of scapula to inferior facet on greater tubercle of humerus
Innervation- axillary nerves
Blood- circumflex scapular artery

23

Teres minor action

lateral rotates humerus, stabilizes shoulder joint

24

Deltoid

Attachment- lateral 1/3 of clavicle and spine of scapula to deltoid tuberosity of humerus
Innervation- axillary nerve
Blood- deltoid branch of thoracoacromial artery and posterior

25

Deltoid action

abducts arm from 15 to 120˚, anterior part of muscle flexes and medially rotates while posterior part extends and laterally rotates

26

What type of joint is the sternoclavicular joint?

synovial

27

What are the bones involved with the sternoclavicular joint?

clavicular notch and sternal facet

28

Ligaments involved in the sternoclavicular joint?

anterior and posterior sternoclavicular ligaments, interclavicular ligament, and costoclavicular ligament

29

Movement of the sternoclavicular joint

clavicle
-incline 40˚
-depress 10˚
rotate on long axis
-protract 30˚
-retract 25˚

30

Acromioclavicular joint is what type of joint?

synovial

31

Ligament involved in acromioclavicular joint?

acromioclavicular ligament

32

What type of joint is the scapulothoracic?

muscular

33

What are the two bursae of the scapulothoracic joint?

subscapular bursa- between subscapularis and serratus anterior
scapulothoracic bursa-between serratus anterior and external intercostals

34

Muscles involved with the scapulothoracic joint?

subscapularis (superficial), serratus anterior (middle), and external intercostals (deep)

35

Movement of the scapulothoracic joint?

-elevation 40˚
-depression 10˚
-retract 20˚
-protract 30˚
-rotate up 20˚
-rotate down 60˚
-does 1/3 of arm abduction