Bone bruises (contusions) are similar to bruises on your skin. But they’re more serious because damage to your bones can take longer to heal and may lead to fractures (broken bones). Most people can manage bone bruise symptoms with the RICE method while their bones heal. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.