ORTHO
BULLETS
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Review Question - QID 216613

TKA Patellar Prosthesis Loosening QID: 216613 (OBQ14.206.1)
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QID 216613 (Type "216613" in App Search)
An 86-year-old man complains of knee pain and swelling 10 years after total knee arthroplasty. On examination, he has no fever, and his knee is neither red nor warm. There is pain with active and passive knee flexion, but no extensor lag is appreciated. The clinical appearance of his knee is shown in Figures A and B. An immediate post-operative radiograph taken 10 years ago is shown in Figure C. A current radiograph is shown in Figure D. Knee aspiration reveals yellow and slightly cloudy synovial fluid with 700 WBC/mm3 with 55% neutrophils. What is the most likely diagnosis?

  • A
  • B
  • C
  • D
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  • A
  • B
  • C
  • D