Upper Limb (Humerus, Radius, Ulna)

What are the four main groups of bones in the upper limb?

• Shoulder girdle, arm, forearm, hand

• Skull, spine, ribs, pelvis

• Femur, tibia, fibula, patella

• Clavicle, scapula, humerus, ulna

What is the main role of the upper limb?

Which 3 bones comprise the shoulder?

• Humerus

• Scapula

• Tibia

• Radius

• Clavicle

[Navigate to the “Humerus” section of the website.]

The greater tuberosity is the attachment site for 3 of the 4 rotator cuff muscles. Where is the greater tuberosity located on the humerus?

• Medially

• Laterally

• Inferiorly

• Anteriorly

Which rotator cuff muscle attaches to the lesser tuberosity?

• Supraspinatus

• Infraspinatus

• Teres minor

• Subscapularis

Which nerve is at risk in a surgical neck fracture of the humerus?

• Radial nerve

• Axillary nerve

• Ulnar nerve

• Median nerve

What is the consequence of radial nerve damage in a mid-shaft fracture?

• Loss of sensation in the fingers

• Paralysis of the wrist extensors, resulting in 'wrist drop'

• Inability to move the shoulder, resulting in 'frozen shoulder'

• Loss of elbow flexion, resulting in 'elbow drop'

What does the head of the humerus articulate with to form the shoulder joint?

• Trochlear notch of the ulna

• Glenoid fossa of the scapula

• Head of the radius

• Capitulum of the humerus

What is a supracondylar fracture?

• A fracture of the distal radius

• A fracture of the distal humerus just above the elbow joint

• A fracture of the proximal femur

• A fracture of the clavicle

Which artery can be damaged in a supracondylar fracture?

• Radial artery

• Ulnar artery

• Brachial artery

• Femoral artery