I have copied an excerpt from a paper on palliative treatment for bone metastasis for you. It is as follows:
"Radiation Therapy Targeting Bone Metastases
Men who experience pain from a bone metastasis will often be treated with radiation targeted directly to the metastasis. This will kill the prostate cancer cells and relieve the pain. (Note that radiation therapy used to treat bone metastases is completely unrelated to radiation therapy that might have been used earlier in prostate cancer treatment.)
External beam radiation therapy uses x-rays to kill the cancer cells that have settled in the bones. This type of treatment, sometimes referred to as spot radiation, is mapped out and planned very precisely by the radiation oncologist to ensure that the x-rays are targeting the metastasis and are not causing damage to the surrounding bone and muscle tissue.
Radiopharmaceuticals, or radioactive drugs, are injected into the body through a vein and settle in the bone metastases, at which point they release radiation to the local area and kill the cancer cells. The two drugs used for this procedure, samarium (Quadramet) and strontium (Metastron), are sometimes used in combination with chemotherapy."
Hope this helps and sorry to hear that your husband is continuing to suffer from this disease. My best to you and him.
Diagnosed 04/10/08 Age 58 at the time
Gleason 4 + 3
DRE palpable tumor on left side
100% of 12 cores positive for PCa range 35% to 85%
Bone scan clear and chest x ray clear
CT scan shows potential lymph node involvement in pelvic region
Started Casodex on May 2 and stopped on June 1, 2008
Lupron injection on May 15 and every four months for next two years
Started IMRT/IGRT on July 10, 2008. 45 treatments scheduled
First 25 to be full pelvic for a total dose of 45 Gray to lymph nodes.
Last 20 to prostate only. Total dose to prostate 81 Gray.
Completed IMRT/IGRT 09/11/08.
PSA 02/08 21.5 at diagnosis
PSA 07/08 .82 after 8 wks of hormones
PSA 10/08 .642 one month after completion of IMRT, 6 months hormone