Circumflex Fibular Artery, Posterior View

Description

Posterior to the knee joint, the popliteal fossa frames the proximal tibia and distal femur while the fibular head sits inferolateral to the lateral tibial condyle. From the posterior aspect of the fibular (peroneal) arterial system, the circumflex fibular artery arises near the proximal fibula and curves laterally around the fibular neck before sweeping anteriorly toward the anterior compartment. Small accompanying veins track alongside the arterial course, and the vessel’s arc places it deep to the superficial fascia and close to the posterolateral capsular margin. A short, tight turn. Surgical exposure around the fibular head and neck routinely risks this vessel, along with the common fibular nerve that wraps the same bony landmark, so a posterior perspective helps clarify why posterolateral approaches to the knee and proximal fibula can bleed briskly when dissection strays too deep. The circumflex fibular artery also contributes to the periarticular genicular anastomosis, a point that matters when planning flap perfusion, interpreting postoperative hematoma, or understanding how collateral circulation can maintain distal flow when proximal channels are compromised. Educators can place this plate into lower limb anatomy and musculoskeletal blocks to teach the transition from posterior to anterior compartments and the vascular geography of the lateral knee. For orthopaedic, sports medicine, and vascular surgery materials, it supports discussions of proximal fibular fracture fixation, lateral meniscus and posterolateral corner reconstructions, and safe zones for portals and retractors around the fibular head. Anatomical accuracy verified by SciePro's Medical Advisory Board.