What is the most common carpal bone to undergo necrosis?

The most common carpal bone to undergo necrosis is the lunate. This condition, known as Kienböck's disease, is a result of compromised blood supply to the lunate bone, leading to osteonecrosis. The lunate is situated centrally in the wrist, which makes it vulnerable to force and trauma. Poor blood circulation to this bone, often due to repetitive stress, trauma, and other factors, can lead to its degeneration.

While the scaphoid bone is also frequently mentioned in discussions of carpal bone injuries and necrosis, it is primarily known for its high risk of avascular necrosis following fractures rather than being the most common bone to experience necrosis overall. The hamate and trapezoid bones are less frequently associated with necrotic conditions.