Palpation
The scaphoid can be palpated at the base of the anatomical snuff box. It can also be palpated in the volar (palmar) hand/wrist. Its position is the intersections of the long axes of the four fingers while in a fist, or the base of the thenar eminence. When felt in this position, the bone will feel to slide forward during radial deviation (wrist abduction), and flexion.
Clicking of the scaphoid, or no anterior translation can indicate scapholunate instability.
Read more about this topic: Scaphoid Bone