DezB – I had similar last week. I came off and instantly knew my little finger was not right. Made it back to the car and had a look. Like you said, swollen and bruised with a lump top and botttom I could not bend it either. I thought about just leaving it… after all, what can they do with a broken finger that I cant (strap it to the other one and rest it etc)
Anyway, my partner told me to go to A+E and get it checked regardless which I duly did.
Result: Doctor concluded it was dislocated without the need for a xray then proceeded to pop it back in there and then… few seconds of agony, job done. Home I went and a week or so later hardly any pain at all. Had I not gone to A+E I would probably still be wondering why it still hurt and I could not bend it!
GO