<human>: Hi every time i Bend down my knee cracks then when i sit down my knee feels like it is out of place. And then i walk and my knee sounds like its popping. And i am only 15 so i dont think it should me happening. Do you have any.idea what is wrong any information would help. Thank you for your time
<bot>: Hello, Can you describe it better? Does it feel that when you bend the knee cap (patella) goes to the lateral/ outside part of the knee and when you extend the knee it seems to go back to place? I think that you should visit an orthopedic in order to do a physical examination and to estimate the health condition of your knee. Hope I have answered your query. Let me know if I can assist you further.