 Included patients presenting with spinal metastasis secondary to breast or prostate cancer are randomized to two groups, intervention and control. Both groups receive standard radiotherapy, which is currently the gold standard of care for such patients. The intervention group will also receive a vertebroplasty single or multiple levels, while the control group will receive a simulated vertebroplasty, where local anesthesia and gentle hand manipulation will be used but the vertebra will not be accessed. The primary outcome is pain relief, though other factors such as quality of life and pain medications will also be evaluated. 