Why is my injured finger still hurting after 2 months?

Patient: I jammed my finger and the day it happened it did not feel too bad; just some swelling, stiffness and soreness, however after over 2 months it has not improved much and is still stiff, slightly swollen and sore. I am concerned because a jammed finger has never hurt for this long.

Symptoms: Pointer finger is stiff, slightly swollen and sore

Doctor: