Ring finger injury, have concerns about symptom

Five days ago my left ring finger was injured from catching a football just for fun not playing the actual sport. I had it checked at an ER but they weren't exactly sure if it was fractured  and splinted my finger. I did see my family doctor who also got the same set of  xrays and he said yes it is cracked but a few days later phoned to say no it isn't. Said to remove the splint and exercise it.

I have noticed something.. the injury occured in the middle joint, joint that is above the knuckle.  However on the inside of this joint (facing the middle finger) it looks bulged or rounded. I traced my finger over it and it is definitely rounded and very hard. I know the joints are naturally a bit roundish on the outside but this is large compared to the  ring finger on my right hand. Also looking at it you can see the bulging.

I was wondering if this is bone or a bone I was feeling? It is quite painful, that area and the area of the finger that is injured. Pins n' needles sensations as well.  

Suggestions?  Thanks for your help.

[Michael L Gross, MD]

This may simply be a jammed finger or it could be an injury to the collateral ligaments or volar plate.  The numbness may be bruising of the small sensory nerve to the finger tip, the digital nerve.  If there is no gross deformity or instability, "buddy taping" (taping to the adjacent finger, with one thin strip of tape above the knuckle and one below) will be useful for support and to encourage motion.  In the the case of even a jammed finger, swelling may persist for some time.

[sea_shell]

Thanks for your reply.

I have my finger buddy taped now.

Another thing I forgot to mention. If I  touch that bump, bulge and  gently move my finger slowly up and down, I can hear a clicking type noise in that bulged area. I only did this once or twice because it is actually painful in that area plus the movement painful..  I'm not sure what this clicking is?

If I try to make a fist, my ring finger will not bend to the palm, my pinky finger does not bend. Pinky finger isn't injured. The middle finger (not injured either) will bend but the joint closest to the nail will not curl under. Thumb and Index are fine. I was wondering if there is an injury to one finger can it affect the other fingers beside it?