Hi Susan
My husband was diagnosed about 2 years ago. His spine was damaged by the mm and he could not walk without the aid of crutches. To get out of a chair or up from bed made him shout out in pain and I thought it would just get worse and worse.
After radiotherapy, chemo, steroids and an SCT Stephen's mobility has improved no end. He now walks about 4 miles a day and needs no crutches nor walking stick.
He does still suffer from back pain but it is manageble with mst and gabapentin. He walks a little lop sided but manages very well.
I know that this is such an individual disease that it may not be the same for your dad but fingers crossed that, like Stephen, it improves with treatment.
All the best Gillxx