I play with a fiddler who quit playing the fiddle for thirty years, because his spine was "fused into one solid mass." he couldn't hold the fiddle, unless he leaned the fiddle against a wall, so he could move his fretting hand up and down the fingerboard.
    Last march, a friend made a little portable pedestal that hooks under his stool, that allows him to lean the fiddle against it, while he sits down. And, boy!!!! Can he fiddle!!!!!
    I don't know if anyone else needs one of these, but they are easy to make (and very inexpensive). PM me for any info.