Getting erection after spinal cord injury

Patient: I have a spinal cord injury at level T4 complete, loss of sensation from the point of injury downward. I have been having problem on how to have erections so as to have sex, i have used 100mg of Viagra which i did not achieve much result i.e erection, i have also tried Cialis 10mg without result too, please to what extent can i increase the Cialis dosage and can i still have my own biological children and how possible is that? Thank you…

Doctor: