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39

Reconstruction Quiz

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1 / 50

During trialing for a cruciate-retaining total knee arthroplasty, the surgeon is unable to fully extend the knee and is left with a 15 degree flexion contracture. The flexion gap is well balanced. Which of the following options will create a knee that is balanced in both flexion and extension?

2 / 50

With respect to management of osteoarthritis of the knee with osteotomy which one of the following statements is true?

3 / 50

With respect to Unicompartmental knee replacements (UKR) which one of the following statements is false?

4 / 50

Which of the following findings is a prerequisite for a high tibial valgus osteotomy for medial compartment osteoarthritis?

5 / 50

All of the following are contraindications for a medial unicompartmental knee replacement EXCEPT?

6 / 50

What is the range of pore size of cementless porous implants to allow for optimal bony ingrowth?

7 / 50

During a minimally invasive total knee arthroplasty with a quadriceps sparing approach, the exposure is found to be limited and causing difficulties with jig alignment. What is the optimal next step?

8 / 50

A 41-year-old male has steroid-induced avascular necrosis of the hip and decides to undergo metal on polyethylene total hip arthroplasty. His 80-year-old, sedentary father had a total hip replacement 5 years ago. With comparison to his father, the patient should be informed of the following risk?

9 / 50

What is the most common complication after revision of a total hip polyethylene liner in a patient with well-fixed femoral and acetabular shell components?

10 / 50

All of the following are acceptable indications for use of a constrained acetabular component EXCEPT:

11 / 50

During primary total knee arthroplasty, the trial components are in place. The extensor space is tight, but flexion space is normal. What is the best gap balancing solution?

12 / 50

A 65-year-old female has severe knee arthritis with a significant flexion contracture and valgus deformity. Postoperatively in the recovery room after a total knee replacement, she is unable to dorsiflex her toes. Management should include?

13 / 50

Which of the following treatment options does not have Grade A recommendations supporting its utilization by the American Academy of Orthopaedic Surgeons (AAOS) Guidelines for Treatment of Knee Arthritis (OA)?

14 / 50

Which of the following total hip arthroplasty patients appropriately meets the criteria for a surgical debridement with isolated femoral head and polyethylene liner exchange?

15 / 50

Which of the following has been shown to increase the rate of failure of cemented femoral components in total hip arthroplasty?

16 / 50

Which type of inflammatory cell is involved in the biological response to metal-on-metal particulate debris?

17 / 50

A 65-year-old male presents with a painful right total knee arthroplasty, which was performed ten years ago. CRP is 15 mg/L. Knee aspiration reveals 2,100 WBC’s with 78% PMN’s. Which of the following is the best management option?

18 / 50

Osteopenia has what effect on the strength of the bone-cement interface in comparison to normal bone?

19 / 50

A posterior cruciate retaining total knee arthroplasty is contraindicated in all of the following patients EXCEPT?

20 / 50

A 66-year-old male is undergoing a total knee arthroplasty using a fixed bearing posterior stabilized component. During intraoperative trialing of the components it is noted that the flexion gap is loose, and extension gap is appropriate. If this is not corrected, what post-operative complication is this patient at risk of having?

21 / 50

When discussing metal on metal hip resurfacing versus metal on polyethylene total hip replacement, the surgeon should inform the patient that all of the following are disadvatages of hip resurfacing EXCEPT?

22 / 50

Failure to identify a hypoplastic lateral condyle in a valgus knee will result in which of the following errors if a posterior condylar referencing guide is used for total knee arthroplasty?

23 / 50

All of the following are risk factors for developing a sciatic nerve palsy following total hip arthroplasty EXCEPT:

24 / 50

In total hip arthroplasty, which of the following techniques will lead to improved stability by increasing the abductor tension?

25 / 50

Which of the following is true when comparing hydroxyapatite(HA)-coated femoral stems to identical non-HA porous-coated and stems after implantation?

26 / 50

When placing acetabular screws to supplement cementless acetabular fixation in total hip arthroplasty, placing screws in which zone poses the highest risk to damaging the external iliac vasculature?

27 / 50

A patient who has previously undergone a lateral closing wedge tibial osteotomy 10 years prior is scheduled for a total knee arthroplasty (TKA). Which of the following factors is most likely to be present and may complicate the arthroplasty?

28 / 50

Performing an isolated release of the popliteus tendon during a total knee arthroplasty is most appropriate in which of the following scenarios?

29 / 50

Malrotation of total knee components leading to patellar tracking problems is best diagnosed by what radiographic modality?

30 / 50

During total knee arthroplasty, an excessive posterior femoral resection will lead to which of the following scenarios?

31 / 50

While trialing components during a routine total knee arthroplasty, the flexion gap is felt to be loose and the extension gap is stable. Which of the following are possible ways to treat this intraoperative instability?

32 / 50

A 78-year-old female undergoes total hip arthroplasty through a minimally invasive surgical approach. During insertion of a metaphyseal fixation stem with a cementless press-fit technique, a crack in the calcar is identified. The stem is removed, two cable wires are passed around the calcar, and the same stem is reinserted. Which of the following statements is true?

33 / 50

Which of the following describes the mechanical axis of the limb in template preparation for a total knee arthroplasty?

34 / 50

A design surgeon has created a new polyethlyene acetabular liner for total hip arthroplasty. Early clinical outcomes are comparable to conventional total hip arthroplasty. At 4 year follow-up, radioisometric analysis reveals 0.05 mm of annual wear in the surgeon’s trial patients. Which of the following statements can be made from this data?

35 / 50

All of the following are risk factors for wear-related failure in total knee arthroplasty when using a polyethylene liner that underwent sterilization via gamma irradiation in air EXCEPT?

36 / 50

Which of the following factors MOST places the knee at risk of patellar maltracking in total knee arthroplasty?

37 / 50

All of the following are independent risk factors for dislocation after total hip arthroplasty EXCEPT?

38 / 50

Which of the following statements regarding the use of continuous passive motion (CPM) devices following total knee arthroplasty is true?

39 / 50

Which of the following situations is appropriate for revision of a total hip arthroplasty to a constrained acetabular liner?

40 / 50

With regards to unicompartmental knee arthroplasty, all of the following are true EXCEPT:

41 / 50

Risk factors for a motor nerve palsy following primary total hip arthroplasty include all of the following EXCEPT?

42 / 50

Which of the following is indicative of type 1 collagen breakdown and can be utilized as a marker of bone turnover?

43 / 50

During a minimally invasive approach to total hip arthroplasty a femoral periprosthetic fracture occurs. Which of the following steps is crucial to properly treat this complication?

44 / 50

Which of the following is true regarding the conversion of hip arthrodesis to total hip arthroplasty?

45 / 50

During total hip arthroplasty, which of the following techniques increases range of motion prior to impingement?

46 / 50

Which of the following intra-operative techniques during total knee arthroplasty (TKA) decreases the need for lateral release?

47 / 50

Osteoprotegrin (OPG) binds to what structure to inhibit particle-induced osteolysis?

48 / 50

A 65-year-old male who had a total knee arthroplasty 8 years ago comes into the office with worsening knee pain. The orthopaedic surgeon is concerned about infection and aspirates the knee. Which of the following are the lowest laboratory values from a synovial aspirate suggestive of infection?

49 / 50

Which of the following statements regarding the use of continuous passive motion (CPM) devices following total knee arthroplasty is true?

50 / 50

A patient comes to the office with a flexion contracture following a total knee arthroplasty that has resulted in an unsatisfactory outcome. Intraoperative examination also reveals the knee is loose in flexion. What steps should be included in the revision surgery?

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