What does this mean? 

Sexual function in humans is controlled by parts of the central nervous system (CNS), particularly the brain and spinal cord. Interruption to the CNS through injury to the spinal cord will therefore have some effect on sexual function. The extent to which sexual function is impaired, however, depends on a variety of factors including the level of injury, the severity of damage to the spinal cord, and whether the individual is male or female.

The impact of Spinal Cord Injury (SCI) on procreation is more severe for men than for women. The majority of men with spinal cord injuries have poor sperm quality, a ejaculatory dysfunction and are unable to have erections, making reproduction via sexual intercourse virtually impossible.

In women with spinal cord injury, sexual dysfunction relate to excitement phase (vaginal lubrication), orgasm and possible painful conditions in people with incomplete injury.

.Unlike men with spinal cord injuries, the ability of women with spinal cord injuries to conceive is thought to be unchanged, but generally, women who have higher and more complete neurological injuries were the least likely to become pregnant compared with those with the lowest degree of neurologic impairment. This may reflect the fact that women are avoiding having children because of the overall difficulties they may have caring for themselves after an spinal cord injury.