hey sounds like you are doing great!! I broke my femur (into 5 pieces wakeboarding) in August last year and the best advice I can give you is to work hard on those muscles and in PT....the bone healing generally isnt the issue( it was for me but thats because my fracture was very unstable) but its the muscles which atrophy that will give you problems if not worked early....but sounds like you doing ok there.

I got my ROM back at about 6/7 weeks - At 5 weeks you are well on track, dont worry. Just takes time. Thinks its harder if your nail was instered in through your knee to get full ROM - mine went in through my hip so never really had huge problems.

just keep at the PT!

Kara