Table 3 Issues Assessed in the Questionnaire

Questionnaire 1#:

A. Demographic and general informations:

 1. Gender (single choice: 1.male; 2.female)

 2. Age (years)

 3. I have previous experience of surgery simulation by using orthopedic model (single choice: 1.yes; 2.no)

B. Questions(single choice: 1.strongly disagree; 2.disagree; 3.equivocal; 4.agree; 5.strongly agree; 6.do not know):

 1. This theoretical guidance segment is very helpful for me to master the surgical technique.

 2. The second teaching segment^a of this training is very helpful for me to master the surgical technique.

 3. This teaching can guide me to complete the surgery simulation well.

 4. This teaching can guide me to complete real adult DDH-THA well in the future.

 5. From now on, I have self-confidence enough to perform a real adult DDH-THA independently.

Questionnaire 2#:

A. Questions(single choice: 1.strongly disagree; 2.disagree; 3.equivocal; 4.agree; 5.strongly agree; 6.do not know):

 1. From now on, I have self-confidence enough to perform a real adult DDH-THA independently.

 2. This new model reproduced adult DDH in a realistic way.

 3. Operate on this new model reproduced adult DDH-THA in a realistic way.

 4. For surgical technique training of adult DDH-THA, the teaching effect of RRA-SST is better than surgical live teaching.

 5. RRA-SST should be included in the course in the future.

 6. For surgical technique training of adult DDH-THA, the teaching effect of RRA-SST is better than other traditional teaching methods.

 7. For surgical technique training of adult DDH-THA, it is better that conduct RRA-SST first and then conduct live surgical teaching.

 8. Overall, I think RRA-SST is very useful in orthopedic surgery teaching.

B. Questions(multiple choice):

 1. Which Crowe types of adult DDH-THA surgical training needs RRA-SST? (1. Crowe I; 2. Crowe II; 3.Crowe III; 4.Crowe IV)