Exercise Bike (Whaley Bridge SK23)

Hi
Have you an exercise bike that you are currently using as a clothes-horse, or is simply taking up room in the corner?
I'm due to have a hip replacement because of Osteoarthritis and want to keep my fitness up pre-op and to have a low impact aid to enable my recovery post-op.
If you can help, your assistance would be most welcome.
Thanks for reading this post and ttfn.
Mike