Originally Posted by Evil Ira
Jujutsu was often used in Japan a couple of centuries ago, and was used by the Japanese Samurai (I think). I think it also contributed to the creation of original Jujitsu (not modern Jiu-Jitsu, but a martial art focused on street fighting, focusing on fatal body parts). But the original Martial Art of Jujutsu is still practised today, but is not as popular, and often forgotten about.
I beg to differ. But before I do so, I'd like to acknowledge the statement from SSD regarding open-hand strikes and various styles not necessarily being relevant in MMA due to regulations. Most martial arts are designed to kill, therefore only select techniques become applicable to competitive fighting. Very solid post, and you have a great point.
Now, on to Ira's post. Brazilian Jujitsu was adopted from Japanese Jujitsu. Helio Gracie was taught Jujitsu by a Japanese-Brazilian immigrant. Japanese Jujitsu is essentially the father of BJJ. And from what I understand about Japanese Jujitsu, is that it essentially translates into MMA. Japanese Jujitsu was created under the philosophy of incorporating all martial arts into one effective style; essentially what we call MMA now. However, the main difference with Japanese Jujitsu is that it also has many stand-up techniques, grabbing the trachea and dislodging it, for example that are simply illegal in a sport, however Judo is also an off-spring of Japanese Jujitsu. A lot of its techniques are throws, joint locks, and various other methods of manipulating your opponent's strength and momentum. I just thought I'd leave you with some info, as it's a particular subject I'm somewhat familiar with.