The pudendal nerve enervates the genitals and if it is compressed, it can create genital pain. This is an excellent video that does a better job explaining the location and function of the nerve than other media http://www.youtube.com/watch?v=nfZCYSeWbcE by becool19571, a pudendal nerve surgeons.
This was presented at a conference that discussed related topics:
http://webcasts.prous.com/ICSIUGA2010/html/1-en/template.aspx?section=7&p=7,13067#
This was presented at a conference that discussed related topics:
http://webcasts.prous.com/ICSIUGA2010/html/1-en/template.aspx?section=7&p=7,13067#