While i was running with less size shoe , i got knee. it continues for two years. still i feel uneasy in my knee?

Have it looked at: A knee injury can result in redness, bruising, swelling, pain, and possibly instability of the involved area. Have it evaluated by a professional and get the appropriate treatment.

Orthopedist: Knee pain of 2 years duration needs attention. See an orthopedist and have your knee properly examined. Follow up with a podiatrist who can help with shoe recommendations and possibly orthotics.