mezzaluna or ulu

I have developed a knife for arthritis based on a ulu blade. I consulted with arthritis suffers as to what would be the most comfortable position and angle of the handle for the majority of suffers. Not being a PC kind of guy there are two sizes; one for guys and one for gals. I also make regular ulu knives with a comfortable grip that has either a two or three finger grip. As this is my first post I will have to get some photos done to load.
With all due respects to my fellow veterans (Purple Heart) is the wood, not the medal. I guess I did not think that one thru.

 

I like the looks of that knife. Seems like a good design. No arthritis here, yet...but my hands get really sore with certain tasks. One of them being handling firewood...