Fig. 6-19. The hand in various positions. A, B, and C are postero-anterior views. (Note the relation to the radius of the joint line between the lunate and the triquetrum.) D, E, and F are lateral views. A, Adduction. B, Straight position. C, Abduction. D, Extension. E, Straight position. Note the lunate, capitate, scaphoid, and trapezium. F, Flexion.Click for high resolution image.