When my left scaphoid, the bone supporting the thumb, broke, I did not know it. Felt like a sprain. I would have just hopped on my bike and kept playing but my stem was twisted 90* so I took a sub, and went to go fix my bike and finish my beer. I played a few more games that afternoon in early August. It was six weeks before I would go see the doc. Displaced fracture. Bone graft and a titanium screw. 12+ weeks in a cast. FML.