Abstract
Periprosthetic fractures after total knee arthroplasty (TKA) can occur both intraoperatively and postoperatively, and can involve the femur, tibia, or patella. Intraoperative fractures are often caused by technical errors or aggressive impaction of components, while postoperative fractures are often caused by low-level trauma. The treatment of these fractures depends on the nature and stability of the fracture, the alignment and stability of the implant, and patient factors such as comorbid medical conditions and functional demands. The goal of treatment for these patients is to restore preinjury function and maintain a secure, well-balanced, and aligned knee prosthesis. Clinical outcomes for distal femur and proximal tibial fractures have shown good results, while periprosthetic patella fractures often have poor outcomes. There is a paucity of high-quality studies due to the rarity of these fractures; future study is needed to develop treatment algorithms to maximize patient outcome.
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