Clinical Studies on Saphenous Vein Treatments: A Comprehensive Review
Introduction
Saphenous vein insufficiency, a prevalent condition leading to varicose veins, impacts a significant global population, manifesting as pain, swelling, and dermatological changes. Historically, surgical stripping (SS) was the cornerstone of management. However, the last two decades have witnessed a transformative shift towards less invasive endovenous therapies (EVTs), which have emerged as the preferred approaches for addressing incompetent saphenous veins [1]. This comprehensive review synthesizes findings from contemporary clinical studies, meticulously comparing the efficacy, safety, and long-term outcomes of diverse saphenous vein treatments. Furthermore, it delves into the critical factors influencing the selection of the most appropriate therapeutic modality, catering to both patients seeking effective solutions and healthcare professionals aiming for optimal patient care.
Traditional Surgical Stripping (SS): A Historical Perspective
Surgical stripping entails the physical removal of the diseased saphenous vein. While offering complete elimination of refluxing truncal veins, SS is associated with a higher incidence of complications due to its invasive nature. These complications can encompass groin infection, lymphatic disturbances, and nerve damage [1]. The inherent invasiveness and extended recovery period have progressively diminished its role as a primary treatment, paving the way for less aggressive alternatives.
Endovenous Thermal Ablation (ETA): Modern Approaches to Vein Closure
Endovenous thermal ablation techniques leverage heat energy to induce closure of the incompetent vein. The two predominant methods within this category are Radiofrequency Ablation (RFA) and Endovenous Laser Ablation (EVLA).
Radiofrequency Ablation (RFA): Efficacy and Patient Comfort
RFA involves the precise delivery of radiofrequency energy to the vein wall, prompting its collapse and subsequent sealing. Clinical investigations consistently underscore RFA's high efficacy, characterized by robust occlusion rates and superior patient outcomes. A meta-analysis by Luebke et al. revealed no significant disparities between RFA and SS concerning recanalization, retreatment necessity, or occlusion rates. Notably, patient quality-of-life (QoL) scores were markedly enhanced with RFA, particularly regarding an expedited return to daily activities and work [1]. More recent evidence suggests RFA may yield superior great saphenous vein (GSV) occlusion rates compared to EVLA and is associated with a reduced incidence of paresthesia, burns, bruising, and disease recurrence [1]. A 2025 study further corroborated RFA's impressive long-term GSV occlusion rate (88.4%) after 5 years, alongside higher complication-free rates when juxtaposed with EVLA [3].
Endovenous Laser Ablation (EVLA): A Widely Adopted Minimally Invasive Option
EVLA employs laser energy to heat and effectively close the incompetent vein, representing a widely adopted minimally invasive procedure. While undeniably effective, some studies indicate that EVLA might be linked to increased postoperative pain and bruising in comparison to RFA [1]. A systematic review and meta-analysis contrasting EVLA and SS identified no significant difference in early or late recanalization rates; however, the technical failure rate was lower in the EVLA group. Neovascularization at the saphenofemoral junction (SFJ) was also more frequently observed following SS than after ETA [1]. A recent 2025 study reported EVLA's 5-year GSV occlusion rate at 75.0% and a lower complication-free rate (69.0%) relative to RFA and NBCA, with a higher prevalence of pigmentation, paresthesia, and phlebitis [3].
Non-Thermal, Non-Tumescent (NTNT) Ablation: Advancing Patient Experience
Non-thermal, non-tumescent ablation methods circumvent the use of heat and tumescent anesthesia, thereby offering potential benefits in terms of augmented patient comfort and mitigated procedural risks. Prominent techniques within this category include Mechanochemical Ablation (MOCA) and Cyanoacrylate Closure (CAC).
Mechanochemical Ablation (MOCA): Combining Mechanical and Chemical Action
MOCA integrates mechanical disruption of the vein endothelium with the targeted delivery of a chemical sclerosant. Studies have demonstrated MOCA's effectiveness, showcasing comparable vein occlusion rates to thermal ablation techniques. A randomized controlled trial comparing MOCA to RFA for GSV treatment revealed similar improvements in clinical severity and quality of life outcomes [2]. Nevertheless, a noninferiority analysis suggested that a staged approach (MOCA followed by foam sclerotherapy) might be less durable than a concomitant approach (MOCA with phlebectomies) in the long term [2]. Long-term data on MOCA using the Clarivein device indicated a decline in anatomical success rate to 60.5% after 8 years of follow-up [4].
Cyanoacrylate Closure (CAC): Adhesive-Based Vein Sealing
CAC involves the application of a medical adhesive to effectively seal the incompetent vein. This innovative method obviates the necessity for tumescent anesthesia and heat, potentially leading to reduced pain and nerve injury. An RCT comparing SS with CAC indicated similar rates of complete occlusion at 3 months, accompanied by significantly lower postoperative pain and ecchymosis in the CAC group [1]. A 2025 study observed that NBCA exhibited a 5-year GSV occlusion rate of 70.6% and a complication-free rate of 86.0%. However, it was also associated with the greatest postprocedural pain and delayed return to daily activities when compared to RFA and EVLA [3].
Comparative Studies and Long-Term Outcomes: A Synthesis of Evidence
Extensive research has directly compared these diverse treatment modalities, furnishing invaluable insights into their relative effectiveness and safety profiles. While all contemporary EVTs consistently demonstrate comparable effectiveness and high closure rates, each method possesses distinct advantages and potential drawbacks [1].
- **Surgical Stripping vs. Thermal Ablation:** Meta-analyses consistently indicate that while thermal ablation and SS yield comparable long-term anatomical outcomes, thermal ablation frequently results in superior clinical and patient-centered benefits, including enhanced quality of life and a more rapid return to normal activities [1].
- **Radiofrequency Ablation vs. Endovenous Laser Ablation:** RFA is generally linked to reduced postoperative pain and bruising compared to EVLA, despite exhibiting similar occlusion and recurrence rates. More recent data suggest that RFA may offer marginally better GSV occlusion rates and fewer complications such as paresthesia, burns, and bruising [1].
- **Thermal Ablation vs. Non-Thermal, Non-Tumescent Ablation:** A systematic review and meta-analysis found comparable vein occlusion rates between thermal and non-thermal endovenous ablation. Non-thermal techniques were associated with less patient discomfort and a lower incidence of nerve injury in the immediate postoperative period, with similar improvements in QoL [1].
- **Cyanoacrylate Closure vs. Mechanochemical Ablation:** Both CAC and MOCA have demonstrated similar improvements in clinical severity and QoL outcomes, as well as comparable rates of complete vein occlusion and periprocedural pain scores [1].
Long-term studies are paramount for assessing the durability and sustained efficacy of these treatments. A pivotal 2025 study comparing RFA, EVLA, and NBCA over a 5-year period revealed RFA to possess the highest GSV occlusion rate (88.4%), followed by EVLA (75.0%) and NBCA (70.6%) [3]. The same study additionally highlighted that Venous Clinical Severity Scores (VCSS) at 5 years were more favorable in the RFA and NBCA groups when contrasted with the EVLA group [3].
Decision-Making in Saphenous Vein Treatment: A Patient-Centered Approach
The judicious selection of the optimal treatment for incompetent saphenous veins is an intricate process necessitating careful consideration of both the anatomical characteristics of the refluxing vein and the specific attributes of each procedure [1]. Effective chronic venous disease (CVD) management is optimally achieved through a collaborative decision-making framework. This framework integrates the clinician's profound expertise, a thorough understanding of evidence-supported treatment options, a clear apprehension of associated risks and benefits, awareness of available healthcare system resources, consideration of cost-effectiveness, and, most importantly, profound respect for the patient's individual preferences, values, and unique circumstances [1]. Patient engagement in treatment decisions has been unequivocally shown to enhance adherence, improve outcomes, and mitigate post-decision regret [1].
Disclaimer
**This blog post is intended solely for informational purposes and does not, under any circumstances, constitute medical advice. It is imperative to consult with a qualified healthcare professional for accurate diagnosis, appropriate treatment, and any specific medical concerns. The information provided herein should not be utilized as a substitute for professional medical advice, diagnosis, or treatment.**
Conclusion
The therapeutic landscape for saphenous vein treatment has undergone remarkable advancements, now offering a diverse array of effective and minimally invasive options. Clinical studies consistently affirm the efficacy and safety of both endovenous thermal and non-thermal ablation techniques. These modern modalities frequently equal or surpass the outcomes of traditional surgical stripping, while simultaneously offering enhanced patient comfort and improved quality of life. Although RFA appears to demonstrate marginally superior long-term occlusion rates and complication-free outcomes in certain recent comparative analyses, the ultimate choice of modality hinges upon a comprehensive evaluation of individual patient factors, precise anatomical considerations, and a shared decision-making process between the patient and their clinician. Ongoing research and extended long-term follow-up studies will undoubtedly continue to refine our understanding and optimize treatment strategies for saphenous vein insufficiency, ensuring progressively better patient care.
References
1. Joh, J. H. (2025). Algorithm to Select the Treatment Modality for the Incompetent Saphenous Vein. *Vascular Specialist International*, *41*(26), 10.5758/vsi.250079. [https://pmc.ncbi.nlm.nih.gov/articles/PMC12647531/](https://pmc.ncbi.nlm.nih.gov/articles/PMC12647531/) 2. Rahman, T., Noronen, K., Vähäaho, S., Heinola, I., Venermo, M., & Halmesmäki, K. (2025). Three-year follow-up of a randomized controlled trial comparing concomitant and staged treatment of varicose veins following mechanochemical ablation of the great saphenous vein. *Journal of Vascular Surgery: Venous and Lymphatic Disorders*, *13*(5), 102255. [https://www.sciencedirect.com/science/article/pii/S2213333X25000903](https://www.sciencedirect.com/science/article/pii/S2213333X25000903) 3. Toz, H., & Kuserli, Y. (2026). Comparison of long-term outcomes and quality of life following radiofrequency ablation, endovenous laser ablation, and N-butyl cyanoacrylate treatment of greater saphenous vein insufficiency. *Journal of Vascular Surgery: Venous and Lymphatic Disorders*, *14*(1), 102316. [https://www.sciencedirect.com/science/article/pii/S2213333X25001519](https://www.sciencedirect.com/science/article/pii/S2213333X25001519) 4. Oud, S., de Vries, J. P. P. M., & van der Velden, J. J. M. (2025). Long-term outcomes of mechanochemical ablation using the Clarivein device for great saphenous vein incompetence: An 8-year follow-up study. *Journal of Vascular Surgery: Venous and Lymphatic Disorders*. [https://www.jvsvenous.org/article/S2213-333X(24)00363-9/fulltext](https://www.jvsvenous.org/article/S2213-333X(24)00363-9/fulltext)