TKA Complications
A 74-year-old woman presents with 2 years of progressive anterior knee pain and difficulty climbing stairs. She underwent cemented posterior-stabilized TKA 14 years ago for osteoarthritis. Weight-bearing radiographs show tibial component subsidence, progressive radiolucent lines under the tibial baseplate in all zones, and patellofemoral crepitus. ESR is 8mm/hr and CRP is 3mg/L. Aspiration shows WBC 450 cells/microL with 18% PMNs. Regarding aseptic loosening in TKA:
Mark each as TRUE or FALSE
Aseptic loosening is the second most common cause of TKA revision after periprosthetic joint infecti...
The Knee Society radiographic evaluation divides the tibial component into 7 zones on AP and lateral...
Tibial component loosening is less common than femoral component loosening in TKA; the patella never...
Risk factors for aseptic loosening include malalignment (particularly varus tibial component), obesi...
Particle-induced osteolysis in TKA follows the same mechanism as THA: polyethylene debris is phagocy...
Answer the questions to see explanations
Click T (True) or F (False) for each option