Posterior Shoulder

Question 1

Parts of the clavicle from posterior view

Answer 1

• Acromial end
• Groove for costcoclavicular ligament
• Deltoid tubercle
• Sternal Facet

Question 2

Distal and medial border of scapula

Answer 2

Medial = medial border
Distal = axillary border

Question 3

The ___ angle is on the superior border

Answer 3

Superior

Question 4

Posterior parts of scapula

Answer 4

• Supraspinous fossa
• Spine
• scapular notch
• scapular foramen
• Coracoid process
• Acromion process
• Glenoid fossa
• infraglenoid tubercle
• infraspinous fossa

Question 5

___ tubercle of the humerus is a lateral rotator

Answer 5

Greater

Question 6

___ tubercle medially rotates the humerus

Answer 6

Lesser

Question 7

Deltoid origin, insertion, and action

Answer 7

Origin - clavicle, acromion, spine of scapula
Insertion - deltoid tuberosity
Action - Flexion/medially rotate, abduct humerus, extend/laterally rotate

Question 8

Supraspinatus origin, insertion, and action

Answer 8

Origin - supraspinous fossa
Insertion - greater tubercle
Action - adducts humerus and stabilizes shoulder

Question 9

Infraspinatus origin, insertion, and action

Answer 9

Origin - Infraspinous fossa
Insertion - greater tubercle
Action - laterally rotate humerus, stabilize shoulder

Question 10

Teres minor origin, insertion, and action

Answer 10

Origin - dorsal axillary border scapula
Insertion - greater tubercle
Action - laterally rotate humerus, stabilize shoulder

Question 11

Teres major origin, insertion, and action

Answer 11

Origin - dorsal inferior angle of scapula
Insertion - medial lip of intertubercular sulcus of humerus
Action - medially rotate humerus, adduct/extend humerus

Question 12

Triceps brachii origin, insertion, and action

Answer 12

Origin - infraglenoid tubercle
Insertion - olecranon process of ulna
Action - extends/adducts humerus, and extend forearm at elbow

Question 13

Subscapularis origin, insertion, and action

Answer 13

Origin - ventral surface of scapula
Insertion - lesser tubercle of humerus
Action - Medially rotate humerus, adduct humerus, stabilize shoulder joint

Question 14

4 muscles of the rotator cuff

Answer 14

Supraspinatus
Infraspinatus
Teres Minor
Subscapularis

SITS

Question 15

Function of rotator cuff

Answer 15

allows for throwing motion

Question 16

Quadrangular space muscles

Answer 16

Teres minor
Teres major
Triceps
Humerus

Question 17

Triangular interval muscles

Answer 17

Triceps
Teres major
Humerus

Question 18

Triangular space muscles

Answer 18

Teres major
Teres minor
Triceps

Question 19

Nerve and artery in quadrangular space

Answer 19

Axillary nerve
Posterior humeral circumflex artery

Question 20

Nerve and artery in triangular interval

Answer 20

Radial nerve
Profunda brachii artery

Question 21

nerve and artery in triangular space

Answer 21

Circumflex scapular artery

Question 22

What joint has the greatest range of motion in the body?

Answer 22

Glenohumeral joint

Question 23

___ in the shoulder minimize friction

Answer 23

Bursae

Question 24

Joint capsules in the glenohumeral joint

Answer 24

Fibrous and synovial capsule

Question 25

___ lip is around the glenoid cavity

Answer 25

Cartilaginous

Question 26

Describe the fibrous capsule of the glenohumeral joint

Answer 26

• Extends from margin of glenoid cavity to neck of humerus
• Thicker on anterior aspect
• Strengthened by ligaments

Question 27

Describe the synovial capsule of the glenohumeral joint

Answer 27

Lines interior of the fibrous capsule

Question 28

What are the types of bursa in the glenohumeral joint and describe them

Answer 28

Subacromial bursa
- tendon of supraspinatus from acromion

Subscapular bursa
- tendon of subscapularis from humerus/scapula

Question 29

What’s bursitis?

Answer 29

Inflammation of the bursa
- calcium deposits on bursa

Question 30

Describe torn labrum

Answer 30

Partial tear or complete tear of the cartilaginous ring surrounding the glenoid fossa

SLAP tear
superior labrum anterior and posterior