Disciple of Christ wrote

Yes, losing a limb does cause shock and trauma, but as far back as humans can study, we have always been able to repair an amputated limb, and save their life. God did not program the brain to re-grow severed limbs for that one simple reason. The excruciating pain and torment would be too much for the human mind, and you would probably suffer a massive heart attack during the process, and probably die!
Now you know why God won't heal amputees.