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A 70-year-old female has persistent anterior knee pain and stiffness 10 months status-post total knee arthroplasty with associated lateral patellar release. Radiographs before and after surgery are shown in Figures A and B respectively. Pre-operatively, her Insall-Savati ratio is 0.95, compared to 0.76 post-operatively. Which of the following is the most likely cause of her radiographic abnormality and pain?
Notching of the femur
Excessive resection of the distal femur and lateral release of the patella
Preoperative patella baja
Excessive release of the patellar ligament from the tibial tubercle
Excessive resection of the proximal tibia
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Figure 35 shows the AP radiograph of a patient who underwent a previous upper tibial osteotomy (UTO). The patient may be at risk for which of the following during total knee arthroplasty (TKA)?
What is the most frequent complication of both lateral closing wedge high tibial osteotomy and medial opening wedge osteotomy?
Peroneal nerve palsy
A 60-year-old patient had the procedure shown in Figure 7 performed 5 years ago. When converting this patient to a total knee arthroplasty (TKA), what patellar problem is commonly encountered intraoperatively?
A 25-year-old healthy, active male undergoes lateral closing wedge high tibial osteotomy. Which of the following complaints is most commonly associated with this procedure?
Anterior knee pain
A patient who has previously undergone a high 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?
Collateral ligament instability
Patellar tendon insufficiency
Severe varus deformity