Pelvic and hip abnormalities associated with DMC syndrome. The pelvis with both hips is depicted. Both femoral heads are essentially dislocated/severely subluxated from the shallow, dysplastic acetabulum with resultant formation of a pseudoacetabulum superior and lateral to the native acetabulum bilaterally (thick arrow). Both femoral heads are deformed and small in size (thick arrow). There is premature growth plate fusion at the proximal femoral epiphyses (thin arrow). The iliac rest margins appear deformed (star). The ischial bones and inferior pubic rami are hypoplastic as well (arrowhead). There is decreased bone mineral density throughout, and the bones appear gracile.