The cover of the latest issue of Private Eye ("the UK's best-selling news and current affairs magazine") features several English idioms relating to parts of the body.
1. If something costs and arm and a leg, it is very expensive. • I'd love to buy a Rolls-Royce, but they cost an arm and a leg. (See here for the origin of this expression).
2. If you lend someone a hand, you help them. • If everybody lends a hand, we'll finish the job more quickly.
3. If you cut someone off at the knees, you humiliate them or force them to do what you want. • If these measures deprive unions of resources, it will cut them off at the knees.
Of course, the joke is that the (Greek) statue is missing all the body parts referenced in the idioms.