The x-ray reports of these ten cases have come originally from four different offices, and they suggest that during the adolescent period there may be confusion as to diagnosis.
Clinically, we are quite sure that there is a tendency to establish a wrong diagnosis and also to carry out too vigorous treatment which only perpetuates the symptoms. This was so in certain epiphyseal conditions of the hip, knee, and spine until it was recognized that injuries and trauma to the epiphysis should be treated by rest. This was also true with reference to the tibial tubercle.
In regard to the development of the epiphyseal centers in and around the sacro-iliac joint, we have not been able to find any extensive work that gives a good description of this joint; therefore, our work is necessarily a clinical description, using the broad term "the adolescent sacro-iliac-joint syndrome".