The scapholunate angle is the angle between the long axis of the scaphoid and the mid axis of the lunate on the sagittal imaging of the wrist. In a normal situation, it should be between 30 and 60°.

The capitolunate angle is the angle between the long axis of the capitate and the mid axis of the lunate on the sagittal imaging of the wrist. In a normal situation, it should be less than 30° 

Conditions such as dorsal intercalated segment instability and volar intercalated segmental instability will see increases and decreases in these angles as seen above.​