v4.1 Fusion X
Primary driver of late osteolysis and aseptic loosening in TKA. Wear modes: adhesive/abrasive; delamination & pitting with high contact stress/oxidation in older PE. Risk factors: malalignment/malrotation, thin inserts, tibial backside micromotion, third-body debris. Prevention: HXLPE, polished tibial trays, correct alignment, adequate insert thickness. Management: exclude PJI; bearing exchange + synovectomy vs full revision depending on fixation and bone loss.
What is the primary driver of late osteolysis and aseptic loosening in total knee arthroplasty (TKA)?
Which of the following is NOT a recognized mode of wear for polyethylene in TKA?
What is the recommended minimum thickness for a tibial polyethylene insert in TKA to minimize wear?
Which factor is considered the most important modifiable risk factor for polyethylene wear in TKA?
Which of the following materials has been developed to reduce wear in polyethylene components for TKA?
What is the primary mechanism by which polyethylene wear particles lead to osteolysis in TKA?
Which sterilization method has been associated with accelerated oxidative degradation of polyethylene in TKA?
In the management of established osteolysis in TKA, what is the first step that should be taken?
Which of the following options is NOT a recommended prevention strategy for polyethylene wear in TKA?
What is the consequence of inadequate tibial insert thickness in revision TKA?