Humerus

Question 1

What muscles attach to the greater tubercle

Answer 1

Supraspinatus
Infraspinatus
Teres minor

Question 2

What muscles attaches to the lesser tubercle

Answer 2

Subscapularis

Question 3

What is the deep depression between the greater and lesser tubercle called

Answer 3

Intertubercular sulcus/groove

Question 4

What runs through the intertubercular sulcus

Answer 4

Long head of biceps brachii

Question 5

What attaches to the edges of the intertubercular sulcus

Answer 5

Tendons of:-
Pectoralis major
Teres major
Latissimus dorsi

Question 6

What neurovascular structures are at risk in a surgical neck of humerus fracture

Answer 6

Axillary nerve

Posterior circumflex artery

Question 7

What does axillary nerve damage cause

Answer 7

Paralysis to deltoid and teres minor
Difficult abduction
Impaired sensation over regimental badge area

Question 8

What structures run through the radial groove

Answer 8

Radial nerve

Profunda brachii artery

Question 9

Which muscles attach to the humerus anteriorly

Answer 9

Coracobrachialis
Deltoid
Brachialis
Brachioradialis

Question 10

Which muscles attach to the humerus posteriorly

Answer 10

Medial and lateral heads of triceps

Question 11

What structures can be damaged in a mid-shaft humeral fracture

Answer 11

Radial nerve

Profunda brachii artery

Question 12

What muscle group is innervated by the radial nerve

Answer 12

Extensors of the wrist

Question 13

What does damage to the radial nerve cause

Answer 13

Wrist drop - unopposed flexion of the wrist

Sensory loss over dorsal surface of hand

Question 14

Where does the ulnar nerve pass into the forearm

Answer 14

Along the posterior side of the medial epicondyle

Question 15

Which part of the humerus articulates with the radius

Answer 15

Capitulum

Question 16

What depressions are on the anterior aspect of the distal humerus

Answer 16

Olecranon fossa

Question 17

What depressions are on the posterior aspect of the distal humerus

Answer 17

Coronoid fossa

Radial fossa

Question 18

Which part of the humerus articulates with the ulna

Answer 18

Trochlea

Question 19

What is the most common mechanism of injury for a supracondylar fracture

Answer 19

Falling on an outstretched hand

Question 20

What neurovascular structure is at risk in a supracondylar fracture

Answer 20

Brachial artery
Anterior interosseous nerve
Ulnar nerve
Radial nerve

Question 21

What is Volkmann’s ischaemic contracture

Answer 21

Uncontrolled flexion of the hand as flexor muscles become fibrotic and short
Due to damage to the brachial artery