Hi there,
my name is emely, I had the same symptoms as you, didn't hurt much first, just after have using the leg a lot or falling or slipping over. But then in january I fell badly and thought I had torn the ligament or something.
Went to a doctor who sent me to different specialists etc, finally to do an mri scan and x-ray.. 2 days later my doctor called me and said I had a bone tumor called a giant cell tumor. It had eaten 10 cm of my bone and is now replaced with bone cement. I have a lot of metall in my leg and can hardly walk normally. This was like 8 months ago.. Will never have full capacity in my leg again.
I can see you posted this a long time ago, but if you had something similar to what I had, can you please send me an email as I really would like to talk to someone that has experienced a similar catastrophy...
cheers
emely