Small indent on leg after trauma - is it safe to use fillers? (Photos)

Hi everyone, About 3 months ago I felt while skiing. The buckle of my right boot hit the inner part of my left leg. I had a big bruise that resolved normally but I now noticed a small hard lump under the skin (it slowly gettimg smaller, maybe fat necrosis?) and a slight indention. I am really self-concious about my legs. I really don't like it even if it is barely noticible. I was thinking to ask my injector/doctor to had a bit of filler to make it smooth again. I will eventually go in person to see him but I am quite busy at the moment. Is it something possible giving there is no important vein in this area? My doctor is also a phlebologist so I will make sure it is safe enough. Thanks!