Hi Diane,
Yes, I find them difficult as well,
The patient usually presents with buttock pain and we are asked to inject the nerve.
The guru for this nerve (and most nerves !) is a great friend of mine Ke-Vin Chang.
Ke-Vin is in Taipei and he has published some outstanding articles on tracking these small nerves.
I have attached some of his work for you to enjoy.
Steve.
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