Scaphoid fracture which area has maximum chances of AVN/Non-union/Malunion:-
* Scaphoid has retrograded blood supply (distal to proximal) hence the distal pole is highly vascularized.* Due to fracture at the waist of scaphoid, blood supply to proximal pole is compromised. Hence proximal 1/3rd has the maximum chance to undergo AVN/non-union or malunion.
Proximal 1/3
Middle 1/3
Distal 1/3
Scaphoid Tubercle fractrue
NEET 2019