TON neurotomy: have you ever had to bury a 150cm cannulae?

First time I've needed to bury to the hub a 150mm RF cannulae for C2/3 TON radiofrequency neurotomy. I've done his lumbar spine in the past too and had to use 200mm cannulae, and since he's put on weight don't think I will be able to repeat the lumbar RF. Is there any cannulae made longer than 200mm? Maybe I could use a thoracool probe with a perpendicular to MB approach...should reach... I just did a bipolar lesion here as I did not see the risk of making overlapping lesions was worth the... TON neurotomy: have you ever had to bury a 150cm cannulae?
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