[X-ray features of the long-term follow-up (l0-12 years) of the Charnley hip prosthesis fixed with acrylic cement]. / Quadri radiografici a distanza (10-12 anni) delle protesiarticolari d'anca di Charnley fissate con cemento acrilico.

A long term follow-up (10 divided by 12 years) of Charnley total hip arthroplasties fixed with radiopaque acrylic cement is reported. Clinical results and X-rays features have been correlated and discussed with reference to the bone reaction and to the diagnostic possibilities of standard radiographs. A radiographic diagnosis of loosening preceding relevant clinical symptom may allow revision arthroplasty before anatomical situation becomes too deteriorated.

Primary vertebral tumours in children. Report of 20 cases with brief literature review.

20 cases of primary benign and malignant bone tumours in children were reported. The most common tumours were Ewing's sarcoma, aneurysmal bone cyst, benign osteoblastoma and osteoid osteoma. Some rare primary bone tumours in children (osteochondroma, chondroblastoma?, primary lymphoma of bone and neurofibromatosis with unusual cervical spinal changes) were also reported. The authors believe that radiographic findings together with clinical history and clinical examination may yield a high percentage of accurate diagnoses. Although microscopy is essential in the final diagnosis, the microscopic report should be viewed with caution.