True about blood supply of scaphoid-
Ans. is 'c' i.e., Major supply from dorsal surfaceo Major blood supply (70-80%) of scaphoid comes through dorsal surface via dorsal branches of radial artery,o These dorsal vessels enter the scaphoid at or just distal to waist area and supply the proximal pole in retrograde fashion.o Proximal 2/3 rd to 3/4 scaphoid is supplied by these dorsal vesselso 20-30% of blood supply comes through palmar and superficial palmar branches of radial artery,o Distal 1/3 rd or 1/4 th and distal tubercle are supplied by these palmar vessels.
Mainly through ulnar artery
Major supply from ventral surface
Major supply from dorsal surface
Proximal supply in antegrade fashion
Blood Vessels of Thorax