Fig. 1Lewis and Rorabeck classification of supracondylar periprosthetic femoral fracture classification. Type I: Undisplaced fracture, prosthesis stable. Type II: Displaced fracture, prosthesis stable. Type III: Unstable prosthesis with or without fracture displacement.
Fig. 2Anteroposterior and lateral views of supracondylar periprosthetic femoral fracture classification by Su et al. Type I: Fracture proximal to femoral knee component. Type II: Fracture originating at the proximal aspect of the femoral knee component and extending proximally. Type III: Any part of the fracture line is distal to the upper edge of the anterior flange of the femoral knee component.
Fig. 3Classification for periprosthetic fractures of the tibia associated with total knee arthroplasty. There are four types, subclassified as A (prosthesis radiographically well fixed), B (loose), and C (intraoperative). Type I fracture involves the tibial plateau, type II fracture is adjacent to the prosthetic stem, type III fracture is distal to the stem, and type IV fracture involves the tibial tubercle.
Fig. 4
(A) Initial anteroposterior radiograph shows a type II periprosthetic supracondylar femoral fracture.
(B) MIPO procedure was performed with a precontoured locking plate application.
(C) Immediate postoperative AP view.
(D) AP and lateral radiographs show a good healing at the final follow-up.
Fig. 5
(A) Anteroposterior radiograph shows a periprosthetic fracture starting proximal to the femoral component.
(B) Closed reduction and fixation was performed using a retrograde nail.
(C) Fracture was healed uneventfully at 10 month postoperatively.
Fig. 6
(A) Type III periprosthetic tibia fracture in a 67 year-old lady with rheumatoid arthritis.
(B, C) Bilateral locking plate was applied using minimally invasive plate osteosynthesis (MIPO) technique.
(D, E) The fracture was united with good function.