What is the most common source of GSV reflux?

The most common source of Great Saphenous Vein (GSV) reflux is the saphenofemoral junction (SFJ). This anatomical site is where the GSV connects with the femoral vein, and it is a critical area in the development of venous insufficiency. When the valves at this junction become incompetent, it can lead to retrograde flow in the GSV, which subsequently results in reflux.

Reflux at the SFJ can be due to a variety of factors, including valve dysfunction, increased venous pressures, or even anatomical variations. It is important for clinicians and sonographers to assess this area carefully in patients presenting with symptoms of chronic venous insufficiency.

While other areas, such as the thigh, knee, or pudendal regions, can also contribute to venous reflux, they are not as commonly implicated as the SFJ. Therefore, understanding the significance of the SFJ in GSV reflux is crucial for diagnosing and treating venous disorders effectively.