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a b c d a b c d 1 ■ ■ ■ ■ 11 ■ ■ ■ ■ 2 ■ ■ ■ ■ 12 ■ ■ ■ ■ 3 ■ ■ ■ ■ 13 ■ ■ ■ ■ 4 ■ ■ ■ ■ 14 ■ ■ ■ ■ 5 ■ ■ ■ ■ 15 ■ ■ ■ ■ 6 ■ ■ ■ ■ 16 ■ ■ ■ ■ 7 ■ ■ ■ ■ 17 ■ ■ ■ ■ 8 ■ ■ ■ ■ 18 ■ ■ ■ ■ 9 ■ ■ ■ ■ 19 ■ ■ ■ ■ 10 ■ ■ ■ ■ 20 ■ ■ ■ ■ #414   June 2018 1 CE credit $6 5. Life-size 3D models facilitate ___ prior to surgery. a. Screw trajectory simulation b. Templating c. Image thresholding d. All of the above 6. In the cases presented, how quickly were the 3D printed models produced? a. 12 hours b. 24 hours c. 36 hours d. 48 hours 7. To create the 3D model, what had to be digitally erased? a. Acetabulums b. Femurs c. Pevis d. Femoral bones 8. In the SLS technique of rapid prototyp- ing process, what material is used to help enhance the accuracy of this tech- nique? a. Powder b. Nylon powder c. Baking powder d. Carbon dioxide 1. The average lifespan for a prosthesis used for total hip replacement sur- gery is at ____. a. 65-70% b. 70-75% c. 75-85% d. 90-95% 2. Failure of a total hip replacement surgery is most often due to ___. a. Infection b. Instability c. Aseptic loosening d. Component failure 3. Who patented the first 3D printer in 1988? a. Charles Hull b. Herbert Voelcker c. Carl Deckard d. Benjamin Franklin 4. In medicine, 3D printing was first used for ___. a. Dental implants b. Prostheses c. Hip replacements d. Both a and b 9. Which of the following occurs first? a. Adjustment of the malleable cage tem- plate b. Selection of the implants c. Creation of the 3D model d. Simulation of the drill trajectory and screw positioning 10. Which is shown to be a result of using 3D modeling in surgery? a. Reduces operative times b. Reduces blood loss c. Reduces intraoperative complications d. All of the above 3D PRINTING AIDS ACETABULAR RECONSTRUCTION IN COMPLEX REVISION HIP ARTHROPLASTY # 414   June 2018 1 CE CREDIT $6 NBSTSA Certification No. AST Member No. ■ My address has changed. The address below is the new address. Name Address City State Zip Telephone ■ Check enclosed  ■ Check Number ■ Visa ■ MasterCard  ■ American Express Credit Card Number Expiration Date Make It Easy - Take CE Exams Online Y ou must have a credit card to pur- chase test online. We accept Visa, MasterCard and American Express. Your credit card will only be charged once you pass the test and then your credits will be automati- cally recorded to your account. Log on to your account on the AST homepage to take advantage of this benefit. 3DPrintingAids Acetabular Reconstruction inComplexRevisionHipArthroplasty | The Surgical Technologist | JUNE 2018 260