Not an actual self defence story but....
I went on a FAST defence course - hightly recommended, check out the videos on the website for an idea of the fights: dubdubdub dot fastdefence dot com click on downloads at the bottom.
Anyway they taught us to use palm strikes and knees and I got several compliments on how good my knees were, especially that I also used my hands to pull the attacker onto the knee. I have never done any Muay Thai training so attribute this all to combat technique!!
Beth x