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JPO Self-assessment Examination


JPO Journal of Prosthetics and Orthotics: April 2009 - Volume 21 - Issue 2 - p 100-101
doi: 10.1097/JPO.0b013e3181a1b164
  • Free

VOLUME 21 • NUMBER 2 • 2009


1. Read the article on pages 97–99.

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 to the article, “The WILMER Passive Hand Prosthesis for Toddlers” by Dick H. Plettenburg, PhD, MSME.


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Quiz – The WILMER Passive Hand Prosthesis for Toddlers, Dr. Dick Plettenburg

1. [Select the correct response.] Two key attributes of the WILMER hand prosthesis are that it is _____ and _____.

A. inexpensive … easy-to-use

B. highly technical … unobtrusive

C. passive … simple

2. (True or False) ____ Two disadvantages of this prosthetic mechanism are: 1) the other hand is needed to open the prosthesis, and 2) no harness is used to operate the hand.

3. [Select the correct response.] To achieve a natural looking operation of the hand mechanism, the plane of movement of the thumb is placed at a ____ angle with respect to the plane of movement of the fingers.

A. 35°

B. 45°

C. 75°

D. 90°

4. (True or False) ____ The amount of friction on the wrist can be easily adjusted by turning a setscrew.

5. [Select the correct response.] The passive friction wrist is available in _____ (different) diameter(s).

A. 1

B. 2

C. 3

D. 4

6. [Select the correct response.] Some _____ material and a _____ glove cover the hand mechanism to shape a natural appearance.

A. polyurethane … rubber

B. molding … close-fitting

C. foam … cosmetic

D. pliable … flesh-like

7. (True or False) _____ A thorough and revealing outcome study has been successfully performed in order to determine the functional benefits of this prosthesis.

8. (True or False) _____ The clinical experience indicates no major problems regarding the technical properties of the device.

9. (True or False) _____ Despite the effectiveness of this passive hand prosthesis, simple repairs are necessary quite frequently, usually attributable to excessive loads or loosened adhesive bonds.

10. (True or False) _____ A major objective sought with the use of the hand prosthesis is to restore equal arm lengths.

11. [Select the correct response.] Which of the following represents the most significant difference between the WILMER hand prosthesis for children and the L'iL E-Z hand?

A. the L'iL E-Z hand is less expensive to produce

B. the WILMER passive hand prosthesis has more moving parts

C. the WILMER hand offers easy grasp of an object as a result of the coupled motion of the thumb and fingers

D. only the fingers can be moved on the L'iL E-Z hand.

12. [Select the correct response.] Which of the following is NOT an advantage of the WILMER prosthetic hand as stated in the article?

A. thumb and fingers move

B. developed for children aged one through ten years

C. cosmetically superior

D. low mass

E. no need for control harness

F. easy grasp of object

G. reliable in clinical tests

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, $50 nonmembers) to: AAOP, 1331 H Street, NW, Suite 501, Washington, DC 20005. The examination must be received by the AAOP within 3 years of the publication date for credit to be awarded.

Name _____ E-mail: _____

Credentials ____ Certification # _____

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© 2009 American Academy of Orthotists & Prosthetists