Fig. 6

Schematic diagram of pubic and iliac osteotomy. A The pubic ramus osteotomy, two Hoffman hooks were inserted into the obturator under the periosteum to protect the osteotomy site. B Mark the point “a” (the solid line) with a 1.5 cm straight osteotome at the edge of the arcuate line about 4 cm from the anterior edge of the acetabulum. C Use a swing saw to cut the ilium along the dotted line at point “b” to the marked point “a”. D Use a double shoulder osteotome along the lower edge of the marked point “a”, 1–1.5 cm from the posterior column, and cut the bone from point “a” to point “c”