Pseudoaneurysm of the geniculate artery following total knee arthroplasty: a report of two cases

Law KY, Cheung KW, Chiu KH, Antonio GE
Department of Orthopaedics and Traumatology, Prince of Wales Hospital, Shatin, New Territories, Hong Kong

We report 2 cases of pseudoaneurysm of the geniculate artery after a total knee arthroplasty (TKA). The first one was located in the superomedial geniculate artery and resolved after compression dressing and warfarin cessation. The second one was located in the superolateral geniculate artery and was successfully treated with transarterial embolisation. There was no recurrence in both cases. The rare occurrence and delayed presentation of pseudoaneurysms pose a diagnostic challenge. A high index of suspicion is required to make the diagnosis. Early duplex Doppler ultrasonography is recommended when patients present with atypical knee pain and prolonged swelling after a TKA.