<qa>  What is the name of the surgical procedure that is used to guide the needles into?As is standard for these types of surgery, special bone needles will be placed into the broken bones in your back. X-rays will be used to guide the needles into a safe position. A biopsy of the tumor in your back bone will be collected to check the diagnosis of cancer. To collect a biopsy, a small amount of tumor tissue is withdrawn through the bone needle. 