all the pattern routing that i have done utilizes templates.
so what you need to do is first of all make a template in the exact contour of your table leg.
i make my templates out of either 3/4 inch ply or 3/4 inch pine; my router has guide bushings attached to it and then it is a simple matter of adhering the template to the stock and cutting the outline.you will find more info on this in a very useful book called woodworking with the router. hope this helps a bit. cheers.