Common indications: aseptic loosening, PJI, instability, stiffness, polyethylene wear, periprosthetic fracture, malalignment. Workup: exclude infection (ESR/CRP ± aspiration); quantify bone loss (AORI). Reconstruction: restore joint line, balance gaps; use stems, augments, cones; match constraint to ligament competence. Constraint ladder: PS → CCK → hinge; use minimum needed. Outcomes depend on accurate diagnosis and restoration of alignment/rotation/soft-tissue balance.
What is the most common indication for revision total knee arthroplasty (RTKA)?
Which of the following is a mandatory step before performing revision TKA?
What is the recommended serum CRP threshold to indicate a potential periprosthetic joint infection (PJI)?
In the context of revision TKA, which of the following is true regarding polyethylene wear?
What is the primary purpose of using stems and augments in revision TKA?
Which of the following diagnostic criteria for PJI uses a scoring system that includes serum and synovial markers?
What is the significance of the 'constraint ladder' in revision TKA?
When assessing for instability in a revision TKA, which factor is NOT typically considered?
What imaging modality is most useful for assessing 3D bone defects in revision TKA?
Which of the following is a rare indication for revising a total knee arthroplasty?
