Had a prostatectomy in June 2001 and 6 weeks later I sat on the saddle. I got off it very quickly. Had to buy a new saddle with the cutaway for the pelvic bone and at 8 weeks went for a 30 mile offroad ride. Next week sat on the bike and it was a new saddle again. I went through about a saddle a fortnight after that and finished up with my original saddle but a new and updated version.

If you can keep the body fit by other exercise you should be OK but watch out for the "Pain" when you do decide to sit on a saddle. 5 years on and the surgery has no effect on me but I am afraid that pelvic bone ache still comes on after about 4 hours on the bike. No more 2 day rides for me but I never liked them anyway. My view is that is a normal person can do it in 2 days- then a cyclist can do it in one.