The scaphoid bone is the largest bone of the proximal row of wrist bones, its long axis being from above downward, lateralward, and forward.
The bones of this row - scaphoid, lunate, and triquetrum - have their individual movements.
If the scapholunate ligament is disrupted, the scaphoid will subluxate over the dorsal lip of the distal radius.
It is not the same as and has to be distinguished from the scaphoid fossa of the external ear or pinna.
The lunate is stabilised by a medial ligament to the scaphoid and a lateral ligament to the triquetrum.
Due to lack of stability from the separated scaphoid and lunate, the lunate may angulate to the posterior side of the hand.
The transferred toe, consisting of the metatarsal and proximal phalanx, is fixed between the physis of the ulna and the second metacarpal, or the scaphoid.
Arterial flow to the scaphoid enters via the distal pole and travels to the proximal pole.
