1. What is your specialty?

2. How many years have you been in practice?

3. How many ACDFs do you perform per year?

4. Location of practice by AOSpine Region:

5. What is your practice setting?

6. What is the most common structural bone graft or cage material you use for ACDFs?

7. Along with the structural graft above, do you use additional nonstructural graft material to supplement the structural graft?

8. What is the most common structural bone graft or cage material you use for ACDF in multilevel or challenging host cases?

9. Along with the structural graft above for ACDF in multilevel or challenging host cases, do you use additional nonstructural graft material to supplement the structural graft?

10. What is the plate or cage that you most commonly use for your ACDFs?

11. Do you think that achieving fusion is important in ACDF?

12a. Do you think that graft material impacts fusion rate in ACDF?

12b. Do you think that graft material impacts fusion rate in a clinically meaningful way?

13a. Do you think that graft material impacts time to fusion?

13b. Do you think that graft material impacts time to fusion in a clinically meaningful way?

14. If a supplemental graft material enhanced your current fusion rate by 5% without adverse effects, what is a reasonable amount of money that the hospital should pay per case for the material?

15. In your opinion, what is the most commonly used graft material in the most typical ACDF in the United States?

16. In your opinion, what is the gold standard for graft material in the most typical ACDF?

17. Are you satisfied with the level of evidence available in support of the graft material you use for ACDF?

18. Are you satisfied with the comparative effectiveness data available on bone graft materials for the cervical spine?

19. Do you feel that the risk factors for non-unions and poor clinical outcomes are sufficiently well-defined by the literature?

20. Have you changed your graft choice within the last year?

21. Do you think that the most commonly used graft materials in ACDFs have similar efficacy?

22. Do you think that the most commonly used graft materials in ACDFs have similar safety?

23. Why do you use the graft materials you most commonly use in ACDF?