Hello,
Have you been given the option to consider a hip resurfacing? This is an operation, however it is nowhere near as major as the total hip replacement and could mean you would be able to get back to full on sport with minimal restrictions.
It may be that they want you to try conservative management initially, but might be worth discussing with your consultant, especially given your age.
Your local physio should be able to prepare you a general hip strengthening programme taking into account your current level of ability in the mean time.
Hope this is of some help, please don't hesitate to contact me if you would like further information!
Ruth Cheesley BSc(Hons) MSc MCSP
Chartered Physiotherapist