Undergoing physiotherapy for aches and pains.

I am a fresh face in this forum and I'm in need to take help from you people. I believe this forum will pave a path for it. My Dad has been working as a physical trainer for last 15 years. But, for the last 6 months he is presently not active in his work, he has severe back pain and which block him from training. Even though, he is now undergoing treatment, but it is not at all helping him to heal. Lately, I have gone through a blog ( http://aesm.ca/aches-and-pains-from-...physiotherapy/ ) which put forwards the benefits of undergoing physiotherapy for these sort of aches and pains. I guess my Dad can also try this. But, before that I like to know of if there is any experienced people here and what are their thoughts on this. Thanks!