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

### input:
Hello! Some back ground- I have had 2 knee surgeries on my left knee. One in January 2011, with a torn medial meniscus (minor tear) and an ACL tear. Then a second surgery in September of 2011, with a torn medial meniscus that had to be surgically repaired. This past Friday, I was throwing the football with my friends and when I jumped up to catch the ball I landed funny. I felt a pretty big pop and had a lot of pain on the side of my knee where my meniscus was repaired. My knee immediately started swelling, couldn t bend my knee at all, and I couldn t walk (this was probably the worst pain out of all three incidents as I have been able to walk after the previous 2). This went on for the rest of the weekend, and I was in so much pain that I couldn t sleep. I took Advil and kept my knee on an ice machine. However, finally last night I was able to sleep and I woke up with very minimal knee pain and swelling. Originally I though I tore my meniscus again. However, with the pain and selling decreasing so rapidly, I was wondering if left over scar tissue from the previous injuries could have caused this much pain.

### output:

Hi, Post operation hope you had your physiotherapy and are following the advice and take he exercises properly. If not then I would recommend you to get it done as post operative you need to recondition your knee joint to prevent any rein jury. Now since the swelling has subsided but does the pain remain the same even on discontinuing Advil? Also are you able to walk and balance properly without any pain? If the answer is yes then nothing to worry about the meniscus but exercise need to be done to strengthen your muscles especially the qua Chat Doctor.  If the answer is no then you need to get yourself checked by the doctor for any rein jury (till then you are not supposed to bear weight on your knee. Take rest as much as possible and start with hot packs and ice packs alternative to promote healing). Hope this answers your query. Let me know if I can assist you further.