Fig. 3

A case of the measurement process in the coronal structural position matching of the distal radius. Figure a shows the three planes of the coronal plane, the sagittal plane, and the mutually perpendicular cross sections centered on the medial wall of the distal radius. Figure b shows that the vertical axis of the medial wall of the distal radius, the intersection of the coronal and sagittal planes. Figure c shows a cross section through the point on the ulnar point of the lunate. Figure d shows 2 points on different sagittal planes of the medial wall of the distal radius. Figure e represents the projection of the above 2 points on the cross section, and the line represents the medial wall of the distal radius. Figure f shows the maximum vertical distance from the medial wall of the distal radius to the ulnar point(9.62 mm) and the radial point of the lunate (3.98 mm) in the lunar projection map. 9.62/(9.62 + 3.98)*100% = 70.7%, the 70.7% is the date of coronal structural position matching of the distal radius now