Total knee arthroplasty periprosthetic fracture - type II Lewis and Rorabeck Classification
Presentation
Fall down the stairs.
Patient Data
RX right knee
Distal femur periprosthetic displaced fracture with component intact.
Rx right knee
Locked plating of a supracondylar distal femur fracture above a stable femoral component with two Kirschner wires inserted through the medial femoral condyle.
Case Discussion
These fractures occur above or around the femoral component of a total knee arthroplasty followed by the patella and tibia. Metabolic issues such as osteoporosis are known risk factors for the development of periprosthetic fractures. Surgical treatment is necessary. Reduction and fixation of these fractures is a complex work as a result of the preexisting implants that can obstruct reduction and placement of fixation devices.
Lewis and Rorabeck classification of supracondylar periprosthetic fractures proximal to knee arthroplasty:
- type I: undisplaced fracture, stable prosthesis
- type II: displaced fracture, stable prosthesis
- type III: isplaced or undisplaced fracture, unstable prosthesis
Radiographer: TSRM Fabio Imola