Thanks for posting your querry.
If your dad does not suffer from any diseases such as diabetes
, heart problems etc then surgery is a viable option. The results of a successful surgery may last for a life time.
If he is over weight then, weight reduction will also help him in easing the pain. This can be achieved by exercising, walking (with a stick if required), physiotherapy
, slow cycling.
I would recommend you to take a second opinion
of another doctor, with your dad's reports(Blood reposrts, MRI
) regarding the same.