First, it is the plastic surgery of scar after trauma, including scar plastic surgery and the recovery of hand function. This is quite common in China, and it is available in any trauma plastic surgery hospital.
The second is hand rejuvenation surgery for the elderly. On the one hand, it tightens loose hand skin and removes senile plaques, mainly through laser treatment. On the other hand, it is mainly solved by autologous fat transplantation to restore the atrophic tissue of the elderly to a full state. There are not many in China at present.
At present, there is no operation to make normal hands smaller. Because this kind of operation may produce scars for hours, which may affect the function of normal hands.