This 2006 narrative review by Kim et al. addresses periprosthetic femoral and tibial fractures after TKA. It critiques existing classification systems for failing to guide treatment and proposes a new femoral fracture classification. The central question: which classification system best directs treatment selection for these complex fractures?
Managing a periprosthetic femur fracture in a TKA patient requires answering three questions before you choose a treatment: Is the distal bone stock adequate? Is the component well fixed and well positioned? Can the fracture be reduced?
The Kim classification answers all three simultaneously. A well-fixed, well-aligned component with good bone and a reducible fracture (Type IA) can be braced. The same setup with an irreducible fracture (Type IB) goes to ORIF. A loose or malpositioned component forces you to the OR for revision regardless of reducibility. Poor bone with a loose component means prosthetic replacement.
When planning IM nail fixation, confirm the femoral component design preoperatively. A closed-box component makes retrograde nailing impossible without a burr perforation technique, which risks metal debris and third-body wear. Have a plate system ready as backup.
Distal femoral replacement is a reliable salvage for elderly, low-demand patients with Type III fractures, but the authors caution it will fail early in young patients. For younger patients, bone stock preservation strategies should drive the reconstruction plan.
This 2006 narrative review by Kim et al. addresses periprosthetic femoral and tibial fractures after TKA. It critiques existing classification systems for failing to guide treatment and proposes a new femoral fracture classification. The central question: which classification system best directs treatment selection for these complex fractures?
Managing a periprosthetic femur fracture in a TKA patient requires answering three questions before you choose a treatment: Is the distal bone stock adequate? Is the component well fixed and well positioned? Can the fracture be reduced?
The Kim classification answers all three simultaneously. A well-fixed, well-aligned component with good bone and a reducible fracture (Type IA) can be braced. The same setup with an irreducible fracture (Type IB) goes to ORIF. A loose or malpositioned component forces you to the OR for revision regardless of reducibility. Poor bone with a loose component means prosthetic replacement.
When planning IM nail fixation, confirm the femoral component design preoperatively. A closed-box component makes retrograde nailing impossible without a burr perforation technique, which risks metal debris and third-body wear. Have a plate system ready as backup.
Distal femoral replacement is a reliable salvage for elderly, low-demand patients with Type III fractures, but the authors caution it will fail early in young patients. For younger patients, bone stock preservation strategies should drive the reconstruction plan.