ITS EVERYWHERE!
Usually if a bone's broken some indicators would be:
- Loud crack, grinding during the incident at the location of damage
- Swelling, bruising, if a bone's broken chances are the muscles around it would be affected as well.
- Pain to put weight on the injury, and if attempting to move the injured body part.
- Deformities. If you're arm suddenly has a a stick-like structure sticking out, I might suggest heading to the emergency room.
If you suspect that someone may have broken your bone, don't move the affected area and get medical attention. If the break is serious, and blood is gushing out everywhere, go to the emergency room. If its less severe, go to your doctor.
After going to the doctors, often, the injury would be treated by properly aligned to allow healing. Otherwise, you could have permanent deformity, joint problems, and a serious infection.