Chapter 6 Upper Limb

1. Which of the following is incorrect pertaining to the clavicle?

1. A)  It is attached via ligaments to the coracoid process.
2. B)  The superior surface is grooved for the subclavian artery.
3. C)  After a fracture, the medial segment is raised by the sternocleidomastoid muscle.
4. D)  Fractures are almost always accompanied by acromioclavicular dislocation.
5. E)  Patients with fractured clavicles typically need to support the ipsilateral upper

   limb with the contralateral one.

Ans: D

2. Following an avulsion fracture of the greater tubercle of the humerus, the humerus would primarily be:

1. A)  laterally rotated.
2. B)  medially rotated.
3. C)  abducted.
4. D)  flexed.
5. E)  extended.

Ans: B

3. In the emergency room you see a 65-year-old woman who fell on her outstretched right hand while walking on ice. Upon examination of the right limb, you feel and see a dorsal protrusion just proximal to the wrist. You suspect a:

1. A)  fractured lunate.
2. B)  fractured distal radius (Colles fracture).
3. C)  mid-radial fracture.
4. D)  dislocated first carpometacarpal joint.
5. E)  dislocated midcarpal joint.

Ans: B

4. Which of the following is incorrect pertaining to the scaphoid?

1. A)  It articulates with the radius.
2. B)  It is the most frequently fractured carpal bone.
3. C)  Fracture is accompanied by pain along the lateral side of the wrist.
4. D)  A complication associated with fracture is avascular necrosis.
5. E)  It attaches to the flexor retinaculum.

Ans: E

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5. The cephalic vein:

1. A)  becomes the brachial vein.
2. B)  becomes the axillary vein.
3. C)  originates on the medial side of the dorsal venous network at the wrist.
4. D)  pierces the clavipectoral fascia.
5. E)  empties into the subclavian vein.

Ans: D

6. In the following axial MRI through the distal third of the arm, the brachial artery is labeled number 1 (see thin leader line on image). What is the structure indicated by the arrow?

1. A)  ulnar artery
2. B)  radial nerve
3. C)  cephalic vein
4. D)  short head of biceps tendon
5. E)  basilic vein

Ans: C