My husband was diagnosed at the beginning of this year, he is 76 so unable to have SCT and like your husband he is in a lot of pain mainly in his lower back. They are looking at fitting him with a brace to see if it will help his walking as his mobility is bad but hoping it will improve with the chemo. He is on VCD, 3rd cycle of 6, and up to now he has responded well but I do know it can change. However, there seems to be a lot of treatments out there and it is just sometimes finding the right combination. If you are on facebook you should join the Myeloma UK Support Group, there is a wealth of information on there and they are so supportive. I do wish you well and hope that your husband starts feeling a bit better soon xx