The scaphoid bone is the most common carpal fracture.

• 65% of all fractures involve the waist
• 15% proximal pole
• 12% distal pole (more common in kids)
• 8% tubercle

Risk of scaphoid non union and AVN is dependent on the location of the fracture, due to the retrograde dorsal arterial supply (from distal to proximal).

• proximal pole fractures have a high risk of AVN (30%), up to 100% in proximal 1/5 fractures
• waist fractures, uncommon
• distal pole fractures, rare