Is it safe for a man with spinal cord injury to have sex?

Usually yes. Usually yes...He general rule is if it hurts, find a different position. A good supportive bed is probably a good idea a well. If you are seeing a spine surgeon, they usually have hand-outs on this information including positions to try.
Yes. Yes, as long as the spinal column is stable there should be no issues in tetms of safety as it relates to the spine.

Related Questions

Could a person whit a spinal cord injury would be able to have sex again?

Yes. Even with nerve damage that causes inability to get an erection, there are devices, shots, implants, etc that can be used to regain some sexual function. See a urologist that has experience with this particular issue. Read more...
Yes with adjustments. Often adjustments have to made in position but therapist will help with the how in this question. Read more...

Can men with spinal cord injury (c6 and c7) have sexual intercourse?

Not easily. There is no sensation beow the chest if the patient has a complete spinal cord injury. I have heard some patients can get an erection using viagra (sildenafil) but they should consult a urologist with experience treating spinal cord injury patients. Read more...
Yes. The goal is provide treatment to achieve and maintain an erection. Erection can be achieve with oral or intraurethral medications. If medications are not effective, erection can be achieved by direct stimulation of the penis, penile vibratory stimulation device or vacuum penile pump device. To maintain erection, patients use a constrictor device or "cock ring." do not use constrictors over 30 min. Read more...