Unusual presentation of polyethylene tibial fracture in a polio patient: a case report

The concept of posterior cruciate ligament (PCL)-substituting total knee prostheses has been widely used for total knee arthroplasty (TKA). This design provides better femoral rollback with knee flexion, as it permits more stability under flexion by preventing tibial posterior subluxation. Here, we report a case of an unusual presentation of polyethylene tibial post fracture in a polio patient. Our patient had a history of staged bilateral TKA five years prior to the new presentation. Once the diagnosis was confirmed, the patient was admitted electively for TKA revision and polyethylene exchange. The procedure went well and without complications, and the patient was satisfied upon follow-ups in the clinic.