Two weeks ago I had surgery on my left distal femur to remove a lesion that turned out to be an enchondroma from the lateral condyle.. I can bend my knee 1/3 of the way now, but it gets to a certain point where I cannot bend it past that point, and if I try, my whole leg shakes and it feels so tight like every one of my ligaments is about to snap and my bones will break (I know that's not the case, but thats how my knee feels). I had the lesion taken out and my femur filled with bone graft. Is this normal for the type of surgery I had and for my prognosis? I am scheduled to begin physical therapy this week.