I am a big guy. Not quite 6' with wide shoulders and pretty big hands.   
I have had fingers reattached on my left hand and my right wrist crushed in a separate construction injury. My instrument of choice is a Guild F-30 from the early 1960's. Unlike the new GAD F-30 this guitar has a narrow neck and a short scale. I like the smaller body, it is easier to hold and the short scale helps with my mangled fingers.

I practice scales daily more for for PT and warm ups than for musical awareness of where the notes are.

Playing guitar helps keep my fingers able to play the guitar. A not so vicious cycle.

Don