One of the major reasons for disability in the United States is limb loss. It can make it impossible for someone to work in their chosen profession. It can change their life forever. Even losing one limb is a drastic change that can take years to adjust to -- if you do at all -- and losing multiple limbs could mean you need constant care for the rest of your life.
Many Social Security Disability (SSD) claims revolve around physical injuries. You may have a brain injury or a spinal cord injury that makes it impossible for you to work, for instance. However, though these cases are common, it's important not to assume that only physical injuries qualify. You may also qualify if you have a mental disorder that you're dealing with, which can certainly keep you out of the workforce just like a physical injury or disability.
Supplemental Security Income (SSI) is a program that is in place across the country with the intent to help those in financial need. SSI is available for those with very limited assets and resources.