JPO SELF-ASSESSMENT EXAMINATION
TO EARN TWO PCE CREDITS:
- Read the article on pages 130–137.
- Complete the examination.
- 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: “Overview of Knee Disarticulation,” by Gerald Stark, BSME, CP, FAAOP.
Please allow 2–4 weeks for processing.
- List two (2) of the three reasons why Dr. Pinzur of Loyola University has been an advocate for the knee disarticulation level—because of the combined advantages of: [Any two answers will suffice.]
- Select the correct surgical advantage:
- increased surgical blood loss
- increased resistance to infection
- definitively more bony or muscular disruption
- True or False: Because knee disarticulation preserves the femoral epiphysis and avoids bony overgrowth, it is often used pediatrically.
- Supply the missing answer with a complete sentence. One of the more obvious disadvantages of knee disarticulation prostheses is:_____________________ __________________________________________________________
- Select the correct answer: The frontal plane biomechanics for the knee disarticulation is: a) identical to b) different than c) similar to that of the transfemoral prosthesis if there is true end bearing.
- Fill in the two blanks with the correct terms. One of the goals of the transfemoral interface is to displace the fulcrum medially at the_____________________ rather than the physiologic fulcrum at the _____________________ in order to decrease the overall weight moment.
- Fill in the blank with the correct term: A common error is to treat a knee disarticulation patient as a _____________________ patient with high medial trimline and circumferential tension, which inhibits end-bearing.
- List the two (2) goals when taking the impression:
- True or False: During the impression taking, no ischial or gluteal modification is necessary unless the user cannot tolerate full end-bearing.
- Fill in the blanks with the correct terms. A common type interface and suspension for knee disarticulation is a flexible _____________________ in combination with _____________________.
- Name three (3) types of interface for knee disarticulation:
- Fill in the blank with the correct term. _____________________ knees present the widest array of control mechanisms from friction, pneumatic, and hydraulic to other features such as stance control.
- Select the correct answer. _____________________ knees enjoy the greatest popularity for knee disarticulation because they locate the instant center more proximally and provide toe clearance during swing phase.a) monocentric b) polycentric c) ethnocentric
- Fill in the blank with the correct term. The _____________________ is found by projecting a line proximally thru the polycentric links viewed in the sagittal plane.
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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