Yeah, the seeming arm-loss registered with me, too. Are those blond wigs, or their real hair? The masks sorta scare me.
At first, I thought the two kneeling figures were like human furnishings, which I know some people do get off on(at least in concept). There's so much going-on, I didn't even pick-up on there actually being table legs supporting the captive on the table top.
I like the low-ceiling'ed look of it, like they're in a cellar dungeon.
If I were to title it, I would call it "Revenge of the Blondes" or something.
Those reinforced stockings are the delight of some, so maybe someone with that particular peccadillo will chime in with some much-needed background to this mysterious piece. I'd say it's an Elmer Batters/tickling fans wet-dream brought to life.