Table 1 Questionnaires concerning sexual activities

Before you had symptoms due to lumbar degenerative disease.

 Q1. Did you have sexual desire before the episode of lumbar degenerative disease?

Yes / No

 Q2. How often did you have sexual intercourse?

( ) times/month

 Q3. Did you have organism during sexual activities?

Yes / No

While you suffered from symptoms due to lumbar degenerative disease

 Q4. Have you experienced decreased sexual desire?

Yes / No

 Q5. Did frequency of sexual intercourse decrease?

Yes / No

 Q6. Have you experienced decreased ability to have organism?

Yes / No

 Q7. Have you experienced discomfort during sexual activities?

Yes / No

 Q8. Did you need adjustment in sexual position?

Yes / No

 Q9. What was the most comfortable sexual position?

Missionary position (man on top of woman, face to face)

Amazon position (woman on top of man, face to face)

Spoons position (man from behind woman both lying on their side)

Dog position (man from behind, woman on hands and knees)

Lotus position (man sits cross-legged, woman sits on man)

 Q10. What was the most painful sexual position?

Missionary/Amazon/Spoons/Dog/Lotus

After you underwent posterior lumbar fusion surgery

 Q11. Did you regain sexual desire after surgery?

Yes / No

 Q12. Did frequency of sexual intercourse change?

Increased / unchanged / decreased

 Q13. Did your ability to have organism change?

Increased / unchanged / decreased

 Q14. When did you resume sexual activities after surgery?

( ) weeks after surgery