<s>[INST] i suffered a hard blow to my knee cap a couple weeks ago. There is a piercing pain right below my knee cap when weight is put on it but it does not hurt consistently (more like an on/ off pain) there was swelling when i first injured it but not anymore. i went to my doctor about the injury and she suggested wearing a knee strap around the bottom of my knee cap all time during the first week and then to do it just during any physical activity. i am a hard working athlete and would just like to know what my injury could possible be. [/INST] Hi, Get your X-ray done to rule out any bone injury till then apply ice pack, take over the counter painkillers, use knee cap, apply diclofenac gel. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Jaideep Gaver, Orthopedic Surgeon </s>