I just had a pretty nasty crash. I was biking down a slight downhill on Saturday night and then bam I was instantly (it seemed) on the pavement. It was dark, but I had my lights on and nothing was on the road to hit, I don't even think I hit any rough spots on the road. When I crashed I just felt a big jolt and heard a loud snap as I went flying off the front of the bike. A car was coming in the opposite direction and I thought I hit the car because of the noise... I later found out that was the noise of my clavicle breaking I came down on my right shoulder/chest area hard. When I was aware again, my bike was behind me and I was laying in the middle of my lane, the motorist passing stopped and ran over as he saw it all. I asked him what happened cause I was confused, he said I was riding in the middle of my lane when I just went over the front violently, he worried I hurt my neck but it was fine. The bike itself had little damage, the back rack was bent and my bars got shifted a but no indication that a car or anything else besides the ground hit it. The guy stayed and talked with me and then offered to bring me to the hospital. Thanks to the adrenaline I didn't feel that bad so I just got him to drive me home. I later decided to go to the hospital and found out my clavicle was broken nicely.
Anyhow, its all kind of a mystery but today my dad went and took the front wheel of my bike and noticed that the bearings were very rough in it. I can't figure out what threw me off the bike, is it possible these bearings seized? My bike is a Trek 7100 only a few months old and well maintained. The brakes were not locked up or anything but there were some dark brake pad marks on one side of the rim.