[Apophysitis of the iliac crest. A little known cause of low back pain and pelvic pain in children].

The authors describe an iliac osteochondrosis in 98 teenagers aged of 12 to 17 years, responsible for anterior, medial or posterior pains of pelvis and the lumbar zone, squaring with the period of ossification of the iliac crest. The spontaneous pain was revived by pressing a precise zone of the iliac crest. These pains have the usual characteristics of the pains of ossification of apophysis. The identification of the characteristics allows to avoid any further investigation which will have to be realised in case of doubt or modification of the evoluting symtomatology. It is to recognize this cause of pain so as not to attribute it to a regional morphological anomaly that may lead to excessive surgical indications. The evolution was constantly favourable after a few weeks delay. Only a momentary and adapted restriction of sporting activities is justified.