The authors analyze caused and indications for prostheses of bodies of cervical vertebrae. As caused they mention bone tumours, metastases, benign bone tumours and injuries. For operation they indicate patients with neurological symptoms and instability of the spine. For prostheses they use bone grafts from the blade of the ilium. They insert the graft during traction, as described by Crutchfield and do not routine fix it. After operation they immobilize by "Minerva" for three weeks. The method is in case of metastases and bone tumours only palliative, but improves the patients' mobility and prevents the development of early neurological complications.