Will it help strengthen my broken metatarsal if i have surgery on it?

No: Fracture surgery is used to place the broken parts in the correct position for them to heal. It doesn't affect the strength of the bone itself.

Fracture: What kind of fracture do u have and how old is the fracture?

MOTHER NATURE: If you've had surgery, just let nature take it's course, follow your doctor's advice, DON'T SMOKE, and you should be fine. You're young.