Hi, Welcome to Health care magic forum. You are of the age of 16, unless you have a history of fall, injury, of some thing of that sort dislocation may not be possible. You are suffering from it since 2 years. It may be the arthritis. I advise you to consult an orthopedic surgeon for diagnosis and treatment. You may need to have an M.R.I. for diagnosis. I usually prescribe to my patient with such symptoms neurotropic injections for 10 consecutive days, and then periodically. Ofloxacin mefenamic acid,and paracetamol. Wishing for a quick and complete recovery. Thank you.