The
scaphoid bone (from the Greek word
scaphoides, boat-shaped) is one of the
carpal bones of the
wrist. It is situated between the hand and forearm on the thumb side of the wrist (also called the lateral or radial side). It forms the
radial border of the
carpal tunnel. The scaphoid bone is the largest bone of the proximal row of wrist bones, its long axis being from above downward, lateralward, and forward. It is approximately the size and shape of a medium
cashew.