Fractures of the sacrum and lesions of the intervertebral disks are seldom 
reported in childhood and adolescence. In our report, illustrated by three 
representative cases that we treated during the past six months, we show that 
sacrum fractures, not an easy diagnosis, may be more frequent than currently 
assumed, and that in quite a number of children and adolescents an anterior 
pelvic fracture may in fact be an unrecognized Malgaigne type pelvic fracture 
with a posterior fracture plane cutting through the sacrum. They may be 
accompanied by herniations and/or lacerations of intervertebral disks.