Re: Recumbent VS. Upright? Getting Partial Hip Replacement.
Since you are having a partial replacement and mine was full, my experience may not be the same for you, so I would go to the source, call your surgeon and ask him/her. I can and do go past 90 degrees all the time. My only life long restrictions are to keep my knees from crossing and if I do bring my knees to my chest, to keep the knees apart. Most surgeon's put you on the restriction for just a few weeks following surgery. I have heard of some surgeons who are extra cautious and impose the restriction for life.
I ride a mountain bike and have started to really hit some tougher trails again!!