In the World of Karathis (the official Fiery Dragon campaign setting), the tradition of unarmed combat started in the aftermath of the Shadow Wars, when the Monastic Dragons developed their fighting techniques from observing the mightiest of the world's creatures: dragons.
Mechanically, they are just like the PHB monks, except for the weapons. The kama, sai, siagham, nunchaku and shuriken were replaced by the dragontogue sword, dragonhorn dagger, dragonfang, dragonscale darts and dragontail club.
Expect an article detailing the Monastic Dragons later this week at
www.fierydragon.com .