Urgent Care Urgent Care for Fractures and Sprains 3

Question 1

What neurovascular structure is most at risk in a displaced supracondylar humerus fracture in a child?

Accepted Answer

Anterior interosseous nerve and brachial artery

Answer

The anterior interosseous nerve (branch of median nerve) and brachial artery are most commonly injured in displaced supracondylar fractures.

Question 2

Which of the following Ottawa Knee Rules criteria requires X-ray of the knee?

Accepted Answer

Age over 55 years with knee pain

Answer

Ottawa Knee Rules mandate X-ray for patients over 55 years, isolated patella tenderness, fibular head tenderness, inability to flex to 90°, or inability to bear weight.

Question 3

A patient presents with wrist drop after a humeral shaft fracture. Which nerve is most likely injured?

Accepted Answer

Radial nerve

Answer

The radial nerve runs in the spiral groove of the humerus and is commonly injured with mid-shaft humeral fractures, causing wrist drop.

Question 4

What is the most appropriate splint for an acute non-displaced fracture of the second through fourth metacarpal shaft?

Accepted Answer

Radial gutter splint

Answer

Radial gutter splints immobilize the second and third (index and middle) metacarpal fractures while maintaining wrist and finger positioning.

Question 5

Which clinical sign suggests a complete Achilles tendon rupture rather than a partial tear?

Accepted Answer

Positive Thompson squeeze test (no plantar flexion with calf squeeze)

Answer

A positive Thompson test, where squeezing the calf produces no plantar flexion, indicates a complete Achilles tendon rupture.

Urgent Care Practice Test

Urgent Care Practice Test

Urgent Care Urgent Care for Fractures and Sprains 3