[Pyogenic infections of the sacro iliac joint in children (author's transl)].

The authors report 13 pyogenic infections of the sacro-iliac joint in children. They emphasize the difficulties of the diagnosis. The disease is sometimes recognised only at a late stage because the sign must be misleading. The radiological appearance of the sacro-iliac joint is usually sufficient to diagnose the condition. The germ was most often a staphylococcus aureus. Healing is always obtained by rest or immobilisation on a plaster and antibiotics active against staphylococcus. Surgery is only indicated in presence of an abcess or in cases of diagnostic uncertainty.