FRCS Orth Exam- Knee Arthroplasty 1. Which of the factors below does NOT contribute to catastrophic wear in TKR: A flat tibial PE A kinematic design allowing ample femoral rollback PE machining Irradiation of PE in a vaccum Polyethylene thickness < 8mm(Question 1 of 10)2. Optimal patellofemoral tracking is achieved using all of the following EXCEPT Lateralisation of the femoral component External rotation of femoral component Internal rotation of tibial component Joint line preservation Medialisation of Patellar button(Question 2 of 10)3. All of the following are established techniques to determine proper femoral component rotation EXCEPT Femoral alignment axis method Anteroposterior axis method Epicondylar axis method Posterior condylar axis method Tibia alignment axis method(Question 3 of 10)4. The main disadvantage of an “All Polyethylene” tibial component in primary total knee arthroplasty is: Higher cost Lack of modularity Backside wear Locking-mechanism issue Lower survivorship in comparison to metal-backed (Question 4 of 10)5. Patellar clunk syndrome related to posterior stabilized (PS) total knee replacement occurs due to: Malrotation of femoral component Malrotation of tibial component Impingement of hypertrophic scar tissue at the inferior pole of patella during extension Impingement of hypertrophic scar tissue at the superior pole of patella during flexion Impingement of hypertrophic scar tissue at the superior pole of patella during extension(Question 5 of 10)6. Regarding Patellar resurfacing in primary total knee replacement, which of the following statement is supported by current evidence in literature? Patella resurfacing is more cost-effective in the long term Incidence of patella fractures is less with patellar resurfacing Quadriceps function is better with patellar resurfacing Functional outcome is improved with patella resurfacing Range of movement is improved with patella resurfacing(Question 6 of 10)7. A 70 year old man is undergoing a total knee replacement. The femoral component is ideally placed in 3 degrees of external rotation. Which of the following options is the rationale for this? To balance the extension gap after the bone cuts To balance the flexion gap after the bone cuts To improve patellar tracking To prevent the joint line being raised So as not to overstuff the anterior compartment of the knee(Question 7 of 10)8. A 70 year old patient presents to clinic with longstanding painful total knee replacement. According to the International Consensus Meeting (ICM) for periprosthetic joint infection, which criterion if present alone is considered diagnostic of periprosthetic joint infection? Single positive knee aspiration culture Raised CRP Raised WBC count in synovial fluid Positive histology analysis of periprosthetic tissue Sinus tract communicating with the joint(Question 8 of 10)9. In medial compartment knee osteoarthritis, the TOPKAT study comparing UNI- versus TOTAL knee replacement (TKR) at 5 years showed Unicompartmental knee replacement (UKR) to be associated with : Higher incidence of re-operation Significantly better clinical outcomes Higher follow-up health-care costs Lower costs of surgery Longer hospital stay(Question 9 of 10)10. In comparison to measured resection technique in total knee arthroplasty, which of the following statement is TRUE regarding gap balancing technique Gap balancing has higher incidence of femoral condylar lift off Accuracy of tibial resection has no effect on femoral component rotation Gap balancing is superior in reproducing flexion gap stability Collateral ligament integrity is not important using gap balancing technique Gap balancing has higher femoral rotational errors compared to measured resection technique (Question 10 of 10) Loading ... Courtesy: Zaid al Rab, FOunder, OrthoPass Post Views: 2,223 Related Posts Knee Arthroplasty MCQs for the FRCS OrthCourtesy: Zaid Al-Rab, Founder, OrthoPass, Leeds, UK MCQ Exam for the FRCS Orth 1Courtesy: Zaid al Rub, Founder, OrthoPass Arthroplasty QuizGet explanatory asnwers from our book,
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