I can't relate to the "block" .. but I will share with you that I use this location for placement of my Lidoderm patches when my feet and knees act up with alot of pain.
This link shows the nerve distribution behind the knee and down the leg:
http://neurotalk.psychcentral.com/thread118240.html
3D rotating pictures:
http://www.healthline.com/vpbody/ner...-spine-to-foot
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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