Hi and thanks for the query,
the knee joint is one of the most complex and sensitive jints fo the human body. POst traumatic knee pain
which persists after some time or taking simple analgesics or anti inflammatory drugs deserves a proper clinical evaluation.
An x ray
of the knee could be important to exclude all possible hiiden fractures
or lesions. Special examinations are need for the knee to rule out either bone lesions, lesions of the ligaments or liseions of the knee minisci. I suggest you take an appintment with the orthopedic surgeon or knee specialist fr a proper clinical evaluation. while waiting, an analgesic ot topical anti inflammatiory drugs might be helpful.
Thanks and best regards,