Question

question 23 (mandatory) (2.5 points) if undiagnosed or left untreated, a fracture to the proximal pole of the scaphoid can cause which of the following? a) delayed ulnar nerve palsy b) congestive heart failure c) blood clotting d) avascular necrosis

Explanation:

The scaphoid bone has a unique blood supply. The proximal pole of the scaphoid has a retrograde blood supply. If there is a fracture and it is undiagnosed or untreated, the blood supply to the proximal part can be disrupted. Avascular necrosis is the death of bone tissue due to lack of blood supply. Delayed ulnar nerve palsy is related to nerve compression (e.g., in cubital tunnel syndrome), congestive heart failure is a cardiac condition, and blood - clotting is a general hemostatic process not specifically related to an untreated scaphoid fracture in the way described.

Answer:

d) Avascular necrosis