Circumflex Fibular Artery, Lateral View

Description

Oriented in a lateral stance at the knee and proximal leg of an adult male, the circumflex fibular (peroneal) artery is traced as it winds around the fibular head and neck, passing deep to the biceps femoris tendon and in close relationship to the lateral collateral ligament region. Proximally, the vessel arises in the popliteal fossa from the popliteal artery or one of its terminal branches, then runs anteriorly and laterally along the periosteal surface near the proximal fibula, with accompanying veins and small arterioles feeding adjacent muscle. Superficial landmarks in this corridor typically include the iliotibial tract and lateral retinacular tissues, while deeper planes include the lateral gastrocnemius, soleus, and the origin of fibularis (peroneus) longus. Spatially, it sits lateral to the tibial plateau and inferior to the lateral femoral condyle, hugging the fibular neck where the common fibular nerve also turns. Tight anatomy. That fibular-neck crossing matters. The circumflex fibular artery can be encountered or injured in procedures around the proximal tibiofibular joint, lateral meniscus repair portals, and exposures for posterolateral corner reconstruction, and it may contribute to periarticular anastomoses that maintain perfusion when popliteal flow is compromised. Its proximity to the common fibular nerve makes the lateral approach to the knee a two-structure problem, bleeding and neuropraxia often share the same operative field. Use this asset when teaching lower-limb vascular anatomy in an orthopedic anatomy lab, illustrating lateral knee approaches in a surgical atlas, or clarifying periarticular collateral circulation for radiology and vascular surgery education. Anatomical accuracy verified by SciePro's Medical Advisory Board.