Endovascular repair of a popliteal artery pseudoaneurysm following total knee arthroplasty

A 68-year-old man was referred for a pulsatile and painful mass at the left popliteal fossa. He had gonarthrosis that was treated with total knee arthroplasty three months ago. Postoperatively, the patient had prolonged knee haemarthrosis that caused semi-flexion contracture of the knee joint. An ultrasound examination with Doppler analysis revealed a pseudoaneurysm of the popliteal artery with a size of 5x7 cm occupying the entire popliteal fossa. Orthopedics consultation confirmed the diagnosis of intraoperative vascular injury. Endovascular therapy was planned due to the high risk of prosthesis infection with re-operation.