Pseudoaneurysm of the Posterior Tibial Artery after Total Ankle Arthroplasty: A Case Report

Total ankle arthroplasty (TAA) is performed in selected patients with end-stage ankle arthritis, including idiopathic, post-traumatic, and inflammatory etiologies.Although several studies report superior functional outcomes compared with ankle arthrodesis, the overall complication rate after TAA remains higher.1) Complications following TAA include intraoperative fracture, impingement, aseptic loosening, and wound-healing problems, with reported incidences rang-ing from 4% to 6%.Among these, vascular complications are rare.2) Although comparatively uncommon, delayed recognition of such vascular complications can cause hemarthrosis, persistent ankle pain, chronic swelling, stiffness, and other unfavorable sequelae.3) Although neurologic injuries after TAA have been described in several reports, vascular injuries such as pseudoaneurysms remain rare.We describe a pseudoaneurysm arising from the posterior tibial artery after TAA.This case report was exempted from review by the Institutional Review Board of Chonnam National University Hospital (IRB no.CNUH-EXP-2025-371) because it involved retrospective use of existing clinical data with minimal risk.Informed consent was also waived.