What can cause pain and a lump below the knee after an injury?
Patient: I fell and hit right below my left knee about a month ago and dr said I had bad contusion and an infection so they placed me on kelflex. it is still very very sensitive to the point if I graze it or put any pressure on that spot it will shoots a massive pain stinging feeling. there is also a lump/bruise ( size of half dollar ) what is going on Doctor: Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice.  The pain and lump can be due to hematoma or a mild cortical fracture. MRI scan will help in proper diagnosis.  Hope I have answered your query. Let me know if I can assist you further.