This kind of avulsion injury is quite serious, and it is generally unnecessary to connect the nerve by surgery, because the nerve has been seriously damaged and is a stump. I think it is wise for doctors to ensure the survival of their fingers first. The effect is also good. If there is a feeling at the edge of the nail, then there are nerves passing through the back, and then slowly grow to see how much feeling can be restored. If surgery is performed again, it will be a new injury to the newly recovered finger and unsafe.