It sounds like you sprained your finger when you did it. I did that playing Golden Tee Golf a while back. I still have some trouble with the finger 8 months later but what I found helped at first was that I got vise tape and rapped my finger from the base to the last knuckle just leaving the fingertip exposed. I would also recommend stretching out the finger before bowling.
--------------------
Always be sincere, even when you don't mean it

Known Cell pimp

I tore the muscle in the palm of my ring finger.  I just took that finger out of the ball and continued to bowl.  It affected my game a bit.  But, I learned how to pick 10 pins that way

--------------------
Hammer Bite 15#
Hammer Toxic 15#
Hammer Sharp Blade 15#--selling
Hammer Faball Pink 16#- Selling

I'm thinking I might take that new chick from Logistics. If things go well I might be showing her my O-face. "Oh... Oh... Oh!" You know what I'm talkin' about. "Oh!"