Figure 1
Path A (CLIC point to the upper edge of the acetabulum) diagram. (a) Direction diagram of path A, with X as the upper edge of the acetabulum; (b) diagram of length of path and thickness of the ilium, with the distance between e and f as the total length of path, the distance between a and b as the thickness of the first narrow place, and the distance between c and d as the thickness of the second narrow place.