[Malignant bone tumors of the hip. Anatomo-radiological correlation].

The anatomo-radiological study was conducted in 6 cases of isolated malignant intra-osseous tumours of the hip: 1 osteogenic sarcoma of the femoral head, 1 supra-acetabular chondrosarcoma, 3 carcinomatous metastases of the femoral head (2 predominantly lytic and 1 osteosclerotic), 1 supra-acetabular carcinomatous metastasis. This study reveals why, in the early stages of the disease and depending on the experience of the observer, the radiological appearance of these lesions can be easily confused with those of various conditions frequently seen by the rheumatologist. The authors also discuss the interactions of the metastases with the biomechanical conditions of the affected bone.