rdmullinnex--
it is hard to see in the light of these photos whether or not you have muscle wasting and in any case, it would be best to show your hands to a doctor who can determine whether you have atrophy, not to the untrained eyes on this forum. Once you start scrutinizing every muscle in your body for wasting, it is a slippery slope, believe me.
For what it is worth, I have had some unexplained muscle loss in my hands and forearms and some mild weakness which has not been diagnosed, along with other symptoms. My hands have developed a peculiar laxity or flexibility which I think may be due to the loss of muscle. The fingers kind of bend in a strange way, but they are still functional, but I have problems with some fine motor stuff like opening ketchup packets and ziploc bags. that said, I had an EMG on one arm one year ago and it was normal, so the neurologist said no ALS. I am due back for a follow up later this month, but whatever is wrong with me appears not to be ALS as it has unfolded very slowly and also there is the negative EMG.
there are many things that can cause problems with the hands, including various forms of nerve damage from repetitive stress, i.e. overuse of computer.
so don't go diagnosing yourself with a fatal disease. Do get yourself to a doctor, if, for nothing else, than peace of mind.
good luck-
Sandra