Three weeks ago I was running one evening, and my dog ran between my legs causing me to fall full force on my left arm. I fell on asphalt and also received several cuts. A few minutes later I nearly passed out. We went to the ER, and the attending doctor felt sure there was a fracture (especially where there was a raised area that just didn't look right.) The xrays showed no fracture. There was pain, severe bruising, and swelling at first. Additionally, I had trouble moving my arm to full extension for several days. They had to "glue" several cuts. I can now move my arm completely and it has virtually healed; however there is still a slight protrusion on my outer arm that is hard to the touch and hurts if i lay on that arm. Also, when I straighten my arm all the way out there is a slight tugging feeling at the elbow. Could it have a hairline fracture?