Your post history indicates that this is more than just idle curiosity. It seems like you want to cause permanent disability to yourself, which is something that I absolutely will not assist you with.

If you are considering self-harm, please seek help from a trained professional. Many psychologists are still offering appointments via Zoom, and if you cannot afford such an appointment, many free phone counselling services exist and are still operational.

Self-harm never solves one's problems, and disability is not something that should be fantasized or glorified.