Functional and Clinical Anatomy of the Shoulder Flashcards Preview

Medicine, Year 2, Block 12 (Neurological, Neuromuscular, and MSK Diseases) > Functional and Clinical Anatomy of the Shoulder > Flashcards

Flashcards in Functional and Clinical Anatomy of the Shoulder Deck (44):
1

What is the shoulder joint also known as?

The glenohumeral joint

2

What type of joint is the glenohumeral joint?

Synovial / Ball & Socket Joint

3

The coracoid process is a prominence of what bone?

Scapula

4

What is the name for the joint connecting the clavicle and the acromion of the scapula?

Acromioclavicular joint

5

The acromion is a process of what bone?

Scapula

6

Every muscle which arises from the coracoid is what type of muscle?

A flexor muscle

7

Every muscle which arises from the main scapula is what type of muscle?

An extensor or ABductor muscle

8

What is the relevance of the Anatomical neck in the Proximal Humerus?

There is where the Epiphysis lies between the head and shaft

9

What structure passes through the Intertubercular sulcus of the Humerus?

Long head of the Biceps tendon

10

A fracture of the surgical neck of the humerus can cause damage to what nerve? What does this lead to?

Axillary nerve

Deltoid paralysis, loss of sensation in regimental badge region

11

Which ligament connects a structure of the scapula to another structure of the scapula?

Coracoacromial ligament

12

What are the names for the Coracoclavicular ligaments (2)?

Trapezoid ligament
Conoid ligament

13

What type of joint connects the clavicle with the sternum?

Synovial joint with intra-articular disc

14

What cavity does the shoulder joint sit in?

Glenoid cavity

15

What four muscles make up the rotator cuff?

Subscapularis
Infraspinatus
Supraspinatus
Teres minor

16

Is the teres major a rotator cuff muscle?

No, it inserts on the humeral shaft, not on the head

17

The glenohumeral joint is likely to dislocate in what direction?

Inferiorly, because there are no muscles supporting inferior to the glenohumeral joint

18

What are all the functional movements of the shoulder?

- Flexion
- Extension
- Abduction
- Adduction
- Internal rotation
- External rotation

19

What test can be performed to test for Supraspinatus tendinitis?

Pain arc, between 45 - 120 degrees

Less than 45 degrees = painless

Greater than 120 degrees = painless

20

A pain arc between 45 - 120 degrees suggests what pathology?

Supraspinatus tenditinis

21

Inferior dislocations are not stable - where are they likely to go?

Anterior or posterior dislocation

22

The capsule of the glenohumeral joint is comprised of two layers called?

Synovial layer and Fibrous layer

23

What ligament bridges the gap between the greater and lesser tuberosities of the humerus?

Transverse humeral ligament

24

What ligament protects the superior aspect of the glenohumeral joint?

Coracoacromial ligament

25

What is the name for the group of muscles which support the shoulder joint?

Rotator cuff muscles

26

Where does the subscapularis muscles insert on the humerus?

Lesser tuberosity

27

Where does the infraspinatus insert on the humerus?

Greater tuberosity

28

Where does the teres minor insert on the humerus?

Greater tuberosity

29

Where does the supraspinatus insert on the humerus?

Greater tuberosity

30

Where does the coracobrachialis muscle originate and insert onto?

Origin: Coracoid process of scapula
Insertion: on Humerus shaft

31

Where does the deltoid originate from?

Scapula and clavicle

32

Where does the deltoid insert onto?

Deltoid tuberosity of humerus

33

Where does the short and long head of Biceps brachii originate from?

Short head: Coracoid process of scapula

Long head: Supraglenoid tubercle of scapula

34

What are the four bursae of the shoulder joint?

- Subacromial & subdeltoid bursae
- Subcoracoid bursa
- Subtendinous bursa
- Intertubercular synovial sheath

35

What is the blood supply to the shoulder joint?

Anterior circumflex humeral artery (from axillary artery)

Posterior circumflex humeral artery

Suprascapular artery (from subclavian)

36

What is the nerve supply to the Supraspinatus?

Suprascapular nerve

37

The supraspinatus muscle when contracted, performs what movement?

Abduction of the arm

38

What is the nerve supply of the Infraspinatus?

Suprascapular nerve

39

When the Infraspinatus contracts, what movement is performed?

External rotation of arm

40

What is the nerve supply of the Teres minor?

Axillary nerve

41

What is the origin of the Teres minor?

Lateral border of Scapula

42

When the Teres minor contracts, what movement is performed?

External rotation
Adduction

43

When the Subscapularis contracts, what movement is performed?

Internal rotation
Adduction / abduction

44

What is the nerve supply of the Subscapularis?

Subscapular nerve