Q: do they still masturbate even though they can't feel their genitals ?
A: Depending on the level and severity of the spinal cord injury, reflexive sexual function may or may not be retained. For a man with a complete, low, spinal cord injury, it is unlikely to be able to have an erection because the nerves responsible for that area would be damaged. A higher, incomplete injury could leave the man able to have a reflexive erection, and in some cases have some sensation as well.