AVN: medical initialism for avascular necrosis, lethal damage to bone tissue resulting from traumatic interruption of its blood supply; the scaphoid bone of the wrist is particularly susceptible. The human skeleton has two boat-shaped small bones, one each in the ankle (tarsal) and wrist (carpal) areas. The Latin-derived term navicular ('boat-shaped'), is applied to either bone, whereas its Greek-derived analogue scaphoid, particularly favored in recent decades, is applied only to the wrist bone. How did Eric know that it was his scaphoid that he had fractured? See the verse anatomical snuffbox.
You can view verses on this topic in a wider context by proceeding to the post 'Breaking News: FUNNY BONES' on our full-service blog "Edifying Nonsense". Click HERE!
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