Advanced prostatic carcinoma shows a high incidence of bone metastases. This is the main cause of clinical problems such as invalidating bone fractions, collapses and consequently of sharp pain syndromes. In these cases the therapy needs to achieve quick relief of symptoms. Radiotherapy, with its large variety of technical options, allows a wide modulation to fit a lot of clinical situations among the most frequent for these patients. A large series of treatment modalities and related indications will be presented and discussed in this work.