Shoulder Joint Flashcards Preview

MRCS Anatomy - Upper Limb > Shoulder Joint > Flashcards

Flashcards in Shoulder Joint Deck (21)
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1
Q

What is the blood supply to the shoulder joint

A

Anterior and superior circumflex humeral arteries

Suprascapular artery

2
Q

What is the nerve supply to the shoulder joint

A

Lateral pectoral
Suprascapular
Axillary

3
Q

What are the major bursae in the shoulder joint

A

Subscapular

Subacromial

4
Q

What are the rotator cuff muscle

A

Subscapularis
Supraspinatus
Infraspinatus
Teres minor

5
Q

What covers the articular surfaces of the glenohumeral joint

A

Hyaline cartilage

6
Q

What is the glenoid labrum

A

Fibrocartilage rim that deepens the glenoid fossa

7
Q

Where does the joint capsule extend

A

From anatomical neck of humerus to border of glenoid fossa

8
Q

What lines the inner surface of the joint capsule

A

Synovial membrane

9
Q

Where is the subacromial bursa located

A

Inferiorly to deltoid and acromion

Superiorly to supraspinatus tendon and joint capsule

10
Q

What does the subacromial bursa do

A

Supports deltoid and tendon of suprspinatus

11
Q

Where is the subscapular bursa located

A

Between subscapularis tendon and scapula

12
Q

What does the subscapular bursa do

A

Reduces wear and tear on tendon during movement at shoulder joint

13
Q

What are the ligaments of the shoulder joint

A
Glenohumeral ligaments (superior, middle and inferior)
Coracohumeral ligament
Transverse humeral ligament
Coraco-clavicular ligament
Coraco-acromial ligament
14
Q

What do the glenohumeral ligaments do

A

Connect humerus to glenoid fossa
Form joint capsule
Main source of stability
Stabilise anterior aspect of joint

15
Q

Where is the coracohumeral ligament

A

Attaches base of coracoid process to greater tubercle of humerus

16
Q

What does the coracohumeral ligament do

A

Supports superior part of joint capsule

17
Q

Where is the transverse humeral ligament

A

Spans distance between two tubercles of humerus

18
Q

What does the transverse humeral ligament do

A

Holds tendon of long head of biceps in intertubercular groove

19
Q

Where is the coracoacromial ligament

A

Runs between acromion and coracoid process of scapula (forming coraco-acromial arch)

20
Q

What does the coracoacromial ligament do

A

Prevents superior displacement of humeral head

21
Q

What is the most important ligament that contributes to stability of shoulder joint

A

Inferior glenohumeral ligament