A 22-Year-Old Medical Student Fell Off Her Bicycle onto Her

A 22-year-old medical student fell off her bicycle onto her outstretched hand. She thought she had sprained her right wrist joint and treated herself by binding her wrist with an elastic bandage. Three weeks later, however, she was still experiencing pain on moving her wrist and so decided to visit the emergency department. On examination of the dorsal surfaces of both hands, with the fingers and thumbs fully extended, a localized tenderness could be felt in the anatomic snuffbox of her right hand. A diagnosis of fracture of the right scaphoid bone was made.
-The following statements concerning this patient are correct except which?

A) The scaphoid bone is an easy bone to immobilize because of its small size.
B) A bony fragment deprived of its blood supply may undergo ischemic necrosis.
C) Because the scaphoid bone articulates with other bones, the fracture line may enter a joint cavity and become bathed in synovial fluid, which would inhibit repair.
D) The fracture line on the scaphoid bone may deprive the proximal fragment of its arterial supply.
E) Fractures of the scaphoid bone have a high incidence of nonunion.