JII BCS Exam: Knee System! Quiz

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| By SmithNephew1
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Questions and Answers
  • 1. 

    Which of the following statements are correct? Please choose all the correct response/s below.

    • A.

      The JOURNEY II BCS Knee full market release took place in March 2013 at the AAOS in the US

    • B.

      >20,000 JOURNEY II BCS procedures have been completed

    • C.

      In Australia the first JOURNEY II BCS knee was implanted in August 2013

    • D.

      >10,000 JOURNEY II BCS procedures have been completed

    Correct Answer(s)
    A. The JOURNEY II BCS Knee full market release took place in March 2013 at the AAOS in the US
    B. >20,000 JOURNEY II BCS procedures have been completed
    C. In Australia the first JOURNEY II BCS knee was implanted in August 2013
    Explanation
    The correct statements are that the JOURNEY II BCS Knee full market release took place in March 2013 at the AAOS in the US, and more than 20,000 JOURNEY II BCS procedures have been completed. Additionally, in Australia, the first JOURNEY II BCS knee was implanted in August 2013.

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  • 2. 

    The ___MATCHING™ Technology of the JOURNEY II BCS Knee System incorporates proprietary virtual technology (LifeMOD) that simulates how the implant interacts with the knee’s soft tissue envelope to allow for a boost in function while providing improved reproducibility.

    Correct Answer(s)
    PHYSIOLOGICAL
    PHYSIOLOGICAL MATCHING
    Physiological
    Physiological matching
    Explanation
    The correct answer is PHYSIOLOGICAL MATCHING. The explanation for this answer is that the ___MATCHING™ Technology of the JOURNEY II BCS Knee System uses virtual technology (LifeMOD) to simulate how the implant interacts with the knee's soft tissue envelope. This technology allows for a boost in function while providing improved reproducibility. The term "physiological matching" refers to the ability of the technology to replicate the natural function and movement of the knee, resulting in better outcomes for patients.

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  • 3. 

    What was the high-level rationale behind evolving the original JOURNEY BCS (JBCS) System?

    • A.

      Complete the system

    • B.

      Improve functionality

    • C.

      Increase repeatability

    • D.

      All of the above

    Correct Answer
    D. All of the above
    Explanation
    The high-level rationale behind evolving the original JOURNEY BCS (JBCS) System was to complete the system, improve functionality, and increase repeatability. This means that the original system was not fully developed and needed further enhancements to make it more functional and reliable. By completing the system, improving its functionality, and increasing repeatability, the JBCS System would be able to meet the desired objectives and provide better outcomes.

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  • 4. 

    Which key design changes improved kinematics by reducing early rollback (posterior cam & post engage later in flexion ~60-70⁰)? 

    • A.

      Posterior cam elevated superiorly and cam reduced in size

    • B.

      Post shifted 2mm anteriorly

    • C.

      Post shifted 2mm posteriorly

    • D.

      A & B

    • E.

      A & C

    Correct Answer
    D. A & B
    Explanation
    The correct answer is A & B. The key design changes that improved kinematics by reducing early rollback are the elevation of the posterior cam superiorly and the reduction in size of the cam. Additionally, shifting the post 2mm anteriorly also contributed to the improvement. These changes allow for a later engagement of the posterior cam and post in flexion, specifically around 60-70⁰.

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  • 5. 

    Why has the JII PS box increased in size?

    • A.

      Reduce early rollback

    • B.

      Reduced strain of popliteal tendon

    • C.

      Reduced strain of IT and IT patella band

    • D.

      To accept a constrained insert (bail out option)

    • E.

      A & D

    Correct Answer
    D. To accept a constrained insert (bail out option)
    Explanation
    The JII PS box has increased in size in order to accept a constrained insert (bail out option). This means that the box has been made larger to accommodate a specific type of insert, which allows for a constrained or limited range of movement. This could be necessary in certain situations where there is a need to restrict the movement of the joint for medical reasons or to provide additional support.

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  • 6. 

    Although there are a number of changes it is most important to understand those that have specifically addressed the complications as seen with the JBCS. What are the Key changes to address IT band syndrome? Please choose all correct response/s below.

    • A.

      Post height decreased (on average 2-3mm)

    • B.

      Thinned anterior flange and reduced lateral condyle

    • C.

      Post shifted posteriorly & posterior cam lowered inferiorly

    • D.

      Post shifted anteriorly & posterior cam elevated superiorly

    Correct Answer(s)
    B. Thinned anterior flange and reduced lateral condyle
    D. Post shifted anteriorly & posterior cam elevated superiorly
    Explanation
    The key changes to address IT band syndrome are a thinned anterior flange and reduced lateral condyle, as well as the post being shifted anteriorly and the posterior cam being elevated superiorly. These changes help to alleviate the complications associated with IT band syndrome.

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  • 7. 

    What changes to the original JBCS insert have been made to address the complication of dislocation?

    • A.

      Post height increased (on average 2-3mm) and top of post “squared off”

    • B.

      Post height decreased (on average 2-3mm) and top of post “rounded off”

    • C.

      Post widened (on average 1-2mm)

    • D.

      B & C

    Correct Answer
    A. Post height increased (on average 2-3mm) and top of post “squared off”
    Explanation
    The original JBCS insert has been modified by increasing the post height by an average of 2-3mm and squaring off the top of the post. This change has been made to address the complication of dislocation.

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  • 8. 

    The original JBCS post was “rounded ” at the top which made it more susceptible to varus/valgus dislocation.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The original JBCS post being "rounded" at the top means that it had a curved shape at the upper part. This curvature made it more vulnerable to varus/valgus dislocation, which refers to the inward or outward angulation of the limb or joint. Therefore, the statement is true as the rounded shape increased the risk of dislocation.

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  • 9. 

    The stiffness associated with the original JBCS knee system was attributed to the excessive stresses placed on the soft tissues as a result of limited roll back of the femoral component.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The statement suggests that the stiffness of the original JBCS knee system was caused by excessive stresses on the soft tissues due to limited roll back of the femoral component. However, the correct answer is False, indicating that this statement is not true. Therefore, there must be another reason for the stiffness associated with the original JBCS knee system, which is not mentioned in the given information.

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  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 04, 2014
    Quiz Created by
    SmithNephew1

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