My 17 year old daughter got into a car accident about 2 months ago, and she had her leg injured. The doctors at the hospital she went to said that she had a contusion in her left knee and very bad bruising, and she was to be on crutches for the next 8-10 weeks. Well, we just checked her leg over today and she still is sporting the bruise, but now instead of being hard and swollen, it feels like skin, only it makes a slight dip in her leg. The unbruised portion of her thigh is normal, but the bruised portion makes a dip in her leg. She says it doesn't hurt, but I'm worried that it might be muscular death or something worse. What could it be?