That looks like my leg after my first attempt at snowboarding, minus the two screws for the ligaments
Get some frozen peas! Miles better than the coolpacks you get from the doctors. Metal detectors only seldom find the stuff because it is usually non-magnetic titanium-alloy. Might be worth saving for some very custom RC bits later
Hand-held scanners tend to pick the metal up though and I've had plenty of fun at airports when the guy got jumpy because he thought I had something strapped to my ankle...
Hope you get better soon!