Hi and sorry to hear about your dad s condition. Prostate cancer often metastasies to the bone, especially the vertebrae. At this stage, surgery no longer has any added advantage. The main stem of treatment is hormonal treatment to suppress the levels of testosterone. This only last a while and there is often an escape phenomenon. Also, managing his pains is going to be very important. let him benefit from the best and most powerful available pain killers to keeps his pains away. above all, he needs your love and continuous support. Be there for him. Comfort him and let him know he s loved. Over all, the prognosis is not very promising. Hope it helps....Let us know if there is anything more you wish to know from us. Wish him a good health