Dysplasia Epiphysealis Capitis Femoris (capital dysplasia) is a clinical — radiologic syndrome which resembles Perthes' disease but has important differences, especially in its course and prognosis.
Its radiographs show no collapse or gross fragmentation of the femur.
The structure of the head is granular but the final result is normal structure and a normal shape of the head.
Progressiv improvement of the radiologic appearance of the epiphysis characterizes capital dysplasia.
We found two cases among 33 patients with the diagnosis of Perthes' disease.
These showed progressiv improvement of the radiologic appearance and developed a normal or nearly spherical femoral head but the left hip of case I that developed Perthes' disease.