[An unusual case of chondrosarcoma in a 5-year old boy].

A case of chondrosarcoma in 5 years old boy is presented. This type of neoplasm is extremely rare in this age group usually affecting patients in their forties and fifties. The tumor was located in the acetabular part of the ilium, ischial bone and the capsule what, again, is very rare, especially in children.

[Sclerosing osteomyelitis of the proximal femur in children and adolescents].

Eighteen cases of sclerosing osteomyelitis of the proximal femur in children and adolescent, chiefly boys, have been reported. The lack of local symptoms typical for infection is usually the cause of misdiagnosis and mistreatment. Persistent pain in the hip, especially nocturnal one is clinically characteristic.

Late results of treatment in Perthes' disease by a functional method.

Two hundred ninety-six cases of Perthes' disease with 334 affected hips (38 children had bilateral involvement) were treated by the principle of containment in a "broomstick cast" in abduction and internal rotation, preserved motion in the hip, and continuous traction. Prognostic indicators were recorded, including the age at the onset of the disease, Catterall Group, and risk factors. The mean follow-up period was 8.

[Nonspecific osteogenic arthritis of the hip].

Osteogenic arthritis of the hip in children depending on the localization of the primary focus of infection can be classified into three types of femoral, acetabular and pelvic origin. These types differ as to the pathology as well as clinical course of the disease. Diagnostics and treatment is discussed.

[Long-term results of treating histiocytosis X of the spine].

A series of 38 children and juveniles with eosinophilic granuloma located in 44 vertebral bodies was treated. The diagnosis was based on typical radiographic appearance, bone marrow examination and histology in cases where the lesion was surgically resected. Management consisted mainly of immobilization and unloading of the spine for 2-3 years.