<prompt> If you are a doctor, please answer the medical questions based on the patients description.I took a fall down a couple of steps. My ankle gave out and so I went down awkward on my other foot which caused pain to my left knee that later went away. Later when I stood, there was pain in the left lower side of my back. The pain is increased when I stand or sit in a not good position. Any advice?  <response>: Hi there. Firstly I would like you to get an X-ray done of the injured part. Get it evaluated by an orthopedic. In the meantime start this treatment :1. Take as much rest as possible. This is the best treatment for back injuries.2. Ice pack application to the injured area...4 to 5 times daily. 3. Good analgesic and anti-inflammatory like Flexispaz which also contains a muscle relaxant.4. Local gel massage. Do not apply heat. Final treatment will depend on X-ray analysis. Good luck 