My aching back

The first real snow here in the mid-Hudson Valley of New York State and my back went out shoveling it. ARGH!!! I wouldn't mind, but I have a 9AM appointment this Sunday (forecast - more snow) to buy a genealogy and local history library. If I can get there in the bad weather, how the heck can move those boxes? The last time my back hurt this much I went to New York City for cortisone shots at the Hospital for Special Surgery. $3000 later I could walk again, but jeez!