My son plays soccer in high school. He had occasion during the season that he was hit on his shin a few inches below the knee . After bruising and swelling , he finished the rest of the season without much issues. Now, after the season has finished, he noticed a large area (about the size of half a golf ball) is missing from this area. It is quite painful still to rub his finger over the area. He just never quite noticed it until the season was over. What are the likely issues and treatments. I assume i should see and ortho soon.