### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Hello Sir I think I have a ACL tear (ligament tear in the knee .. I just found out its name .. apparently ) for more than 6 months now My general physician advised me to do exercises and not stain the knee too much .. for some weeks .. to get this tear healed or something I did rest and exercise for 2-3 months, and when I felt that I could run a little and comfortably , I started going out for sports. In retrospect, it was a bad idea. I fell down a few times .. sometimes with excruciating pain , and would come back to my room cursing my knee. Then I again resumed playing few weeks down the line (how stupid!) But now, I think I am totally fed up and disappointed in myself, that I cannot play the easiest of sports without faling like a dud. I dont know what to do. Please help me

### output:

Hello, You have quoted the term ACL Tear. I want to put light on this so that you can have good understanding of that. The ACL is short form of Anterior cruciate ligament. This ligament binds thigh-bone with leg bone at knee. It is a strong ligament and prevents anterior displacement of leg bone in relation to thigh-bone or in other words helps in getting stability at knee.  In case of its rupture you will feel giving away feeling or unstable knee during walking / fast walking and during staring up or down. If you are not feeling instability at your knee then most probably you may not have ACL tear. If your symptoms line up with above description you should have an MRI scan to rule out your pathology. Very early stage tear can be managed conservatively while gross tear should be operated. Hope I have answered your question. Let me know if I can assist you further. 