Periprosthetic Fractures after TKA — Classification & Management
Incidence rising with aging population and expanding TKA volumes. Common sites: distal femur (supracondylar), tibia (around keel/stem), patella (resurfaced patella). Classifications: Lewis–Rorabeck & Su (femur), Felix (tibia), Ortiguera–Berry (patella). Stable components → fixation; loose components/poor bone → revision with stems/augments ± megaprosthesis. Avoid iatrogenic risk factors (anterior femoral notching, malalignment, osteolysis).
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