Thanks for writing to us.
The bump that you have after an injury is likely to be due to fibrosis
of the hematoma
formed in the area. This is less likely to be due to a bone injury
Still it is best to get an X-ray of the area done to confirm.
I hope this information has been both informative and helpful for you. You can consult me again directly through my profile URL http://bit.ly/Dr-Praveen-Tayal
Dr. Praveen Tayal