Courtesy of Paul Traughber, M.D., Boise, Idaho.

Figure 1 is an X-ray of a child’s normal hipbone and a broken (fractured) hipbone from poor blood flow because of Legg-Calve-Perthes disease (LCPD). Figure 2 is an MRI of a child’s normal hipbone with fat in the growth center and an abnormal hipbone where the fat has been lost because of LCPD.