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Self-Assessment Examination


JPO Journal of Prosthetics and Orthotics: October 2004 - Volume 16 - Issue 4 - p 121-122
  • Free


  1. Read the article on pages 113–120.
  2. Complete the examination.
  3. Submit your completed examination to the AAOP per the directions on the next page.


The following questions require short answers only; you do not have to use complete sentences. All questions refer the article: “Effect of the Weight of Prosthetic Components on the Gait of Transtibial Amputees,” by Hamid Bateni, PhD, CPO, and Sandra J. Olney, PhD.


Please allow 2–4 weeks for processing.

  1. List three (3) factors known to affect the characteristics of an amputee’s gait:
    1. __________________________________________________________
    2. __________________________________________________________
    3. __________________________________________________________
  2. True or False: In the last decade a factor that has become an integral component of competition among prosthetic components designers and manufacturers has been the weight of the component.
  3. Select the correct answer: A comparison of available components that affect the prosthetic weight has Never/Often been made.
  4. Name one useful tool to evaluate gait and determine efficiency of walking:
  5. __________________________________________
  6. Circle theINCORRECTpercentage figure: TTAs spend
  7. a) %9% b) 20% c) 41% d) 67% more energy for walking when compared to the able bodied.
  8. List the two (2) commonly-used methods of assessing metabolic energy cost:
    1. __________________________________________________________
    2. __________________________________________________________
  9. Select the correct answer: During the testing procedure, by replacing prosthetic parts, the prosthetic weight was changed by _____________________ grams.
  10. a) 181 b) 203 c) 169
  11. Select the correct answer: [Substantial / No Substantial] differences in relative angles were noted between steel and titanium trials.
  12. True or False: The positive work of the hip tended to be greater when steel components were used, relative to titanium.
  13. List two (2) differences reported by test participants when prosthetic components were changed:
    1. __________________________________________________________
    2. __________________________________________________________
  14. Circle the correct answers:
    • The results of the study showed that there were some / there were no consistent differences in the kinematic and kinetic factors of the amputee gait when the steel prosthetic components were replaced by titanium.
    • The results also suggest that small changes in the weight of a prosthetic limb [do / do not ] affect the stance time of the affected side.
  15. True or False: Test results indicate a significant difference in energy expenditure when steel components were replaced with titanium.
  16. True or False: The low PCI when using titanium components, as indicated by test results, suggests that participants were performing a more economical gait when using the light materials.

Complete the JPO Self-Assessment Examination on the previous page and score a minimum of 75 percent to earn two PCE credits. Send the completed examination and payment in U.S. currency ($20/AAOP members, $40/nonmembers) to: AAOP, Dept. 937, Alexandria, VA 22334-0937. The examination must be received by the AAOP within 3 years of the publication date for credit to be awarded.


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© 2004 American Academy of Orthotists & Prosthetists