Fillers for Wrist, Legs, Ankles and Knees?

I have really tiny wrists. No matter how I much I eat, I can't get the fat to get there. My biceps are fine. Plus, my legs are so tiny from my ankle to my knees. Even my knees are sticking out, while my thighs and the rest are fine. What can I do? I don't what to have any surgery done. I've been hearing lots about hydrogel plus and other fillers. Are these good options?

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