HIP JOINT IN SYSTEMIC BONE DISEASE
It is generally accepted that X-ray examination of pelvis together with that of spine, hand and foot are of major importance in the diagnosis of systemic bone disease. Six cases of systemic bone disease are described which show typical X-ray findings of hip joint and pelvis (achondroplasia, spondyloepiphyseal dysplasia congenita, Morquio's disease, spondyloepiphyseal dysplasia tarda, multiple epiphyseal dysplasia tarda and dysplasia epiphysealis capitis femoris). Characteristic X-ray findings of epiphyseal disturbance is the deformity of femoral capital epiphysis and that of physeal disturbance is poorly developed iliac wing. Difficulties of the diagnosis in mild form of epiphyseal disturbances like “Chondrodystrophischer Habitus”, in precocious arthritis of trada type of epiphyseal disturbance and in dysplasia epiphysealis capitis femoris which must be always taken into considerations in the diagnosis of Legg-Perthes' disease of bilateral hip involvement were discussed.