The answer is: you have to make your own judgment!
what you need to know is that RFA induces numerous changes in calf perforators. These changes seem to result from flow offloading in ablation site and onloading in nonablation site in the early postablation period. The perforators would then either disappear or remain intact and be the origin of recurrence.
See this interesting article:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4557325/
and this one:
New insights into perforator vein incompetence
http://www.ncbi.nlm.nih.gov/pubmed/10479629
http://www.ncbi.nlm.nih.gov/pubmed/17043608