front yard

we find all sorts of things in our front yard.  it is a very public space pressing up against the busyness of a downtown intersection.  lots of foot traffic and late-night activity.  every now and then we discover something other than miscellaneous trash.   this morning we awoke to discover this.

 

an abandoned crutch.  it had me wondering was this the site of a miracle?  is there crime or an accident behind this curious item?  ideas?  by the way, it is now almost 8 in the evening as i type this and the crutch still lies in the same spot.