Session 8 Part 1

Question 1

The scapula articulates with the

Answer 1

Humerus at glenohumoral joint and clavicle at acromioclavicular joint

connects upper limb to trunk

Scapulothoracic joint not a true joint

Question 2

What originates from the subscapular fossa

Answer 2

Subscapularis (rotator cuff muscle)

Question 3

The pectoralis minor muscle inserts onto the

Answer 3

Coracoid process

Question 4

What originates from the coracoid process

Answer 4

Coracobrachialis and short head of beceps brachii

Question 5

Lateral surface of the scapula is the site of the

Answer 5

Glenohumoral joint and various muscle attachments

Question 6

Important bony landmarks on lateral surface of scapula

Answer 6

Glenoid fossa
Supraglenoid tubercle (origin of long head biceps brachii) 
Infraglenoid tubercle (origin of long head of triceps brachii)

Question 7

Posterior surface of the scapula is the site of origin for the

Answer 7

Majority of the rotator cuff muscles

Question 8

Fractures of the scapula features

Answer 8

Indication of sever chest trauma

Does not require fixation as tone of surrounding muscles holds fragments in place

Question 9

Clavicle extends between the

Answer 9

Manubrium of sternum and acromion of scapula

Question 10

3 main functions of clavicle

Answer 10

Attaches upper limb to the trunk as part of shoulder girdle
Protects the underlying neurovascular structures supplying upper limb
Transmits force from upper limb to axial skeleton

Question 11

Sternal end of the clavicle contains a large facet for articulation with the

Answer 11

Manubrium of the sternum and sternoclavicular joint

Question 12

Clavicle inferior surface sternal end rough oval depression for

Answer 12

Costoclavicular ligament

Question 13

Acromion end of clavicle has

Answer 13

Small facet for articulation with the acromion of scapula

Attachment point for 2 parts of the coracoclavicular ligament

Question 14

2 parts of coracoclavicular ligament

Answer 14

Conoid ligament (medial), trapezoid ligament (lateral)

Question 15

Acromioclavicular joint is a

Answer 15

Plane-type synovial joint

Question 16

AC joint 2 atypical features

Answer 16

Articular surfaces are lined with fibrocartilage

Joint cavity partially divided by an articular disc (wedge of fibrocartilage)

Question 17

Posterior aspect of the AC joint reinforced by

Answer 17

Fibres of trapezius muscle

Question 18

3 main ligaments that strengthen AC joint

Answer 18

Acromioclavicular ligament (acromion to lateral clavicle, superficially to joint capsule) (intrinsic) 
Conoid ligament (extrinsic)
Trapezoid ligament (extrinsic)

Question 19

Articular surfaces of sternoclavicular joint are covered in

Answer 19

Fibrocartilage

Question 20

Sternoclavicular joint separated into 2 compartments by a

Answer 20

Fibrocartilaginous articular disc- allows clavicle and Manubrium to slide over each other freely allowing rotation and movement in 3rd axis

Question 21

Movements of the shoulder involving sternoclavicular joint

Answer 21

Elevation
Depression 
Protraction 
Retraction 
Rotation

Question 22

Proximal humerus articulates with

Answer 22

Glenoid fossa of scapula forming glenohumoral joint

Question 23

Distal humerus articulates with

Answer 23

Head of radius and trochlear notch of ulnar

Question 24

Greater tubercle of humerus site of insertion for

Answer 24

3 rotator cuff muscles:

Supraspinatus, infraspinatus and teres minor (superior, inferior and middle facets respectivelyP)

Question 25

Lesser tubercle of humerus is site of insertion for

Answer 25

Subscapularis (rotator cuff)

Question 26

Groove separating two tubercles of humerus

Answer 26

Intertubercular sulcus

Tendon of long head of biceps brachii runs through it

Question 27

How to remember insertion of the muscles at intertubercular sulcus of humerus

Answer 27

A lady between two majors

Latissimus dorsi inserts between teres major on medial lip and pectoralis major on lateral lip

Question 28

Anatomical neck of humerus is site of attachment of the

Answer 28

Articular capsule of the shoulder joint

Question 29

What is most commonly fractured in the humerus

Answer 29

Surgical neck (more than anatomical neck)

Damage to area may cause damage to axillary nerve and posterior circumflex humoral artery

Question 30

Axillary nerve damage will result in

Answer 30

Paralysis of the deltoid and teres minor muscles (can’t abduct)

Impaired regimental badge area sensation

Question 31

Roughened side of lateral humoral shaft known as

Answer 31

Deltoid tuberosity (where deltoid muscle attaches)

Question 32

What lie in the radial groove of humerus

Answer 32

Posterior surface- radial nerve and profunda brachii artery

Question 33

Which muscles attach posteriorly on humeral shaft

Answer 33

Medial and lateral heads of triceps

Question 34

Which muscles attach to the humerus along its shaft anteriorly

Answer 34

Coracobrachialis, deltoid, brachialis, brachioradialis