Forearm and hand

Name the joints from proximal to distal:

• MCP, PIP, DIP

• DIP, PIP, MCP

• MCP, DIP, PIP

• PIP, DIP, MCP

• PIP, MCP, DIP

Name the pointed structure that may not be present in some individuals, which can be donated for tendon grafting.

The flexor digitorum superficialis can be used to

• flex MCP of 2-5 digits

• flex PIP 2-5 digits

• flex DIP of 2-5 digits

• flex PIP of thumb

• flex DIP of thumb

What structures passes through the anatomical snuffbox?

• radial artery

• posterior interosseus nerve

• basilic vein

• superficial branch of radial nerve

• cephalic vein

What tendon reflex should be used to test for functioning of C5-6 spinal nerve?

• Biceps tendon

• Brachioradialis tendon

• Triceps tendon

• Brachialis tendon

• Flexor digitorum profundus tendon

While rollerblading, a 25-year-old male falls on his outstretched right wrist. Physical examination in the emergency department reveals severe pain upon palpation of the anatomical “snuffbox” and radiological studies confirm a fracture. Which bone is most likely fractured?

• Head of first metacarpal

• Lunate

• Scaphoid

• Trapezoid

• Styloid process of ulna

A 33-year-old female comes to the orthopedics clinic complaining of weakness in her right (dominant) hand. During physical examination, you ask her to hold a piece of paper tightly between adjacent surfaces of the index and middle fingers. You find, however, that it is easy, compared with her left hand, to pull the paper from between her fingers. Which muscles are involved?

• First dorsal and first palmar interosseous

• First dorsal and second palmar interosseous

• First lumbrical and second dorsal interosseous

• First palmar and second dorsal interosseous

• None of the options

Intravenous lines are often placed in subcutaneous veins on the posterolateral aspect of the hand. Which nerve would be stimulated in this location?

• Deep branch of radial

• Dorsal cutaneous branch of ulnar

• Lateral cutaneous nerve of forearm

• Superficial branch of radial

• Superficial branch of ulnar

During anatomy lab dissection, a medical student accidentally receives a superficial laceration on the anterior aspect of his wrist. Physical examination in the emergency department reveals no loss of function of intrinsic hand muscles, but the skin on lateral aspect of his palm is numb. Which nerve has been severed?

• Lateral cutaneous nerve of the forearm

• Palmar branch of median

• Palmar branch of radial

• Recurrent branch of median

• Superficial branch of ulnar

Which clinical sign would not be associated with injury of the ulnar nerve due to fracture of the medial epicondyle?

• Numbness from proximal part of the medial half of the palm

• Numbness from the middle finger

• Numbness from the ring finger

• Weakened flexion of digits 4 and 5

• Weakened flexion of the wrist