[Avulsion of the posterior vertebral epiphysis and lumbar disk herniation in adolescents].

In adolescents, on lateral radiographs of the vertebral column, the avulsion of a lumbar posterior ring epiphysis is a good argument suggesting a posterior herniation of the intervertebral disk. Two such cases are reported. The pathogeny of this tearing, unusual in adults, is discussed. This avulsion should be compared with the retromarginal anterior disk herniations, often observed at this age.