New findings about the intrascaphoid arterial system.
We investigated the intraosseous arteries of six normal cadaveric scaphoids using red lead injection and three-dimensional reconstruction with micro-computed tomography. The arterial entrances were generally located around the dorsal ridge, the insertion of the scaphocapitate ligament and the radial part of the radioscaphocapitate ligament. Two to three trunk arteries entered the scaphoid on dorsal ridge at the level of the waist. The distal part of the scaphoid was mainly supplied by arteries from the waist. The blood supply of about 40% of proximal part of the scaphoid was poor. The blood supply from the scaphoid dorsal ridge plays an important role, not only for the proximal part of the scaphoid, but also for the waist and even the distal pole. The intrascaphoid arterial pattern may be contributory to nonunion, especially in proximal pole fractures.
['Xiao|Zirun|Z|', 'Xiong|Ge|G|', 'Zhang|Weiguang|W|']
D000368:Aged D000792:Angiography D002102:Cadaver D005260:Female D006801:Humans D021621:Imaging, Three-Dimensional D008297:Male D008875:Middle Aged D021361:Scaphoid Bone D055114:X-Ray Microtomography
Intraosseous artery scaphoid nonunion microcomputed tomography angiography