Radiofrequency Ablation versus Controlled Venospasm-Assisted Foam Sclerotherapy with High Ligation for Great Saphenous Vein Incompetence: A Propensity Score Matched Study

For millions of people, the veins in their legs are not just a network of tubes but a source of persistent pain, swelling, and unsightly bulging. This condition, known as chronic venous disease, often stems from a failure in the great saphenous vein, the main highway running up the inside of the leg. When the valves inside this vein weaken, blood flows backward instead of upward toward the heart, pooling in the lower limbs. For decades, the standard solution has been to seal this faulty highway shut using heat. Doctors thread a thin wire into the vein and apply radiofrequency energy, essentially cauterizing the vessel from the inside so the body reroutes blood through healthier paths. While effective, this thermal approach requires numbing the entire leg with a large volume of fluid and carries the inherent risks of burning nearby tissue.

A newer, gentler approach has emerged that avoids heat entirely. Instead of burning the vein, this method uses a specialized foam to irritate the inner lining, causing it to collapse and seal. However, standard foam treatments have historically struggled to stay in place long enough to work perfectly, often washing away with the flow of blood before the job is done. Researchers have recently developed a refined version of this foam technique that combines a small surgical tie at the top of the vein with a unique mechanical trick to squeeze the vein shut temporarily, ensuring the foam stays in contact with the walls. The critical question facing doctors and patients is whether this non-heat, non-fluid alternative can match the reliability of the established thermal method.

A team of researchers at Nanjing First Hospital in China set out to answer this question by comparing the two approaches head-to-head. They looked at nearly five hundred patients who had undergone treatment for this specific vein problem between 2023 and 2024. To ensure a fair comparison, the researchers used a statistical method to pair patients who were nearly identical in age, health history, and the severity of their condition, effectively creating two groups that were as similar as possible before the treatment began. This allowed them to isolate the effects of the procedure itself, removing the noise of other variables that might skew the results.

The study focused on two main outcomes: how well the vein stayed closed after one year and how much the patients' symptoms improved. The results were strikingly similar. In the group treated with the new foam technique, combined with a small surgical tie at the groin, 95.2 percent of the treated veins remained completely closed at the twelve-month mark. In the group treated with the traditional radiofrequency heat method, 95.3 percent of the veins stayed closed. The difference was so small it was statistically negligible, suggesting that both methods are equally effective at sealing the vein for at least a year.

Beyond just closing the vein, the researchers measured how much the patients felt better using a standard scoring system for vein severity. Both groups saw a massive improvement, with their scores dropping by an average of seven points on a scale that started around eight. This indicates that whether the vein was sealed with heat or with the specialized foam, the relief from pain and swelling was virtually identical. The patients in both groups reported similar levels of post-procedure pain, and neither group suffered from serious complications like blood clots in the deep veins or infections.

There was one notable difference in the experience of the procedures themselves. The radiofrequency treatment was faster, taking about thirty-nine minutes on average, while the foam procedure took roughly fifty-four minutes. The extra time for the foam method came from the additional steps required: a small incision to tie off the vein at the top, the mechanical squeezing of the vein to induce a spasm, and the careful injection of the foam under X-ray guidance. Despite taking longer, the foam method did not lead to more complications. While there were slightly more reports of bruising and temporary numbness in the foam group, these numbers were not high enough to be considered statistically significant, and both methods proved to be very safe overall.

The researchers concluded that this controlled venospasm-assisted foam technique, when combined with high ligation, is a viable alternative to the standard heat-based treatment. It offers a non-thermal option that does not require the large volume of numbing fluid used in radiofrequency ablation, which can be beneficial for patients who cannot tolerate that fluid load. The study suggests that for patients who prefer to avoid heat or for settings where thermal equipment is unavailable, this foam-based approach provides the same high success rate and clinical relief. However, the authors noted that the study only followed patients for one year, so the long-term durability of the foam seal beyond that point remains to be seen. For now, the data provides strong evidence that doctors and patients have two distinct, highly effective paths to choose from when treating this common and often debilitating condition.