I have a similar injury, not as many fractures, mine was 3 majors with significant displacement. Have been wired back together. I am a week behind you, my injury happened Sept 8. I would like to keep up to date with you on your PT progress and types of exercises you are trying. I went to PT first at 4 weeks 5 days, however, even they were wary to do any manipulation with the knee until 6 weeks to ensure bone has healed.I will be going back next week to begin formalized PT, but have been doing my own exercises at home continuously through the day. I have a secondary issue I am dealing with which is that I broke my back at the same time, so this limits a few things I am able to do, but wearing a brace helps a bit for that.
My follow up xrays are not until Nov 6, I think the OS assistant misunderstood his notes and rather than xrays at 6 weeks she did it 6 weeks after my last appt with him when I had my staples removed. No biggy, I am carrying on with how my body feels. I know the xrays will show healing and I will report to him what I wish to do to carry on.
I believe you are limited to doing PM to me until you have 20 posts (silly, I am currently trying to build up my 20 now,lol)