Sagittal images best depict the anatomic features necessary for evaluation of the instability, and the position of the lunate with respect to the radius and the remaining carpal bones, as are the dorsal and volar radiocarpal ligaments. 矢状面图像可显示月骨、桡骨及头状骨间的相互关系及掌侧和背侧桡腕韧带。