Can fat be injected in the hand and fingers to increase their size?
The only way we can perform a Lipofilling in the hands dorsum is to decrease wrinkles and thin skin produced by aging, not to increase the size of fingers not your hands.
The dorsum of the fingers and hands can be filled with an off the shelf filler such as Radiesse or fat to replace fat that is lost with aging there. This generally hides the veins and tendons and reduce crinkles of the skin, but does not increase the size or width. It is impossible to widen the fingers or hand because of ligaments connecting the skin to the underlying bone.