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original article

Starting January 2021, using Radial 2ring slim
fiber (diameter 1.25mm), below-knee GSV is ablated with
the power of 5W with a targeting LEED of 20-25J/cm
(> fig. 5). We call this technique “2-step-ablation”. With
this technique, we have not experienced any nerve injury
in 140 consecutive legs which underwent GSV ablation of
more than 40cm in length. We would like to recommend
this new protocol for the purpose of avoiding saphenous
nerve injury in below-knee GSV ablation. Long term clini- fig. 5 > “2-step-ablation” of GSV © Junichi Utoh
cal observations are now studied.

JUNICHI UTOH, MD, PHD

Vascular Surgeon
Kumamoto Vascular Clinic, Kumamoto, Japan
Graduated as MD from Kumamoto University Medical
School and working as Resident in Department of Sur-
gery, Kumamoto University Hospital, until his Gradua-
tion as PhD. 1988-1992 Research Fellow at Cleveland
Clinic Foundation. After that Lecturer at Department
of Cardiovascular Surgery, Kumamoto University Hos-
pital. Since 2010 he is the President of his own private
day Kumamoto Vascular Clinic and has treated more
than 7000 cases of varicose vein surgery since then.
In addition to that, he is Councilor of The Japanese
Society of Phlebology, Councilor of The Japanese So-
ciety for Vascular Surgery, Board Certified Surgeon of
The Japanese Society of Surgery, and Board Certified
Fellow of The Japanese College of Angiology. © Junichi Utoh

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