Roger Federer announced on his Facebook Page that he underwent arthroscopic surgery... THis is what the former world number 1 said:
I want to inform you that yesterday I underwent arthroscopic surgery on my knee. I injured my knee the day after the semi-finals in Australia. After getting tests done when I returned home, it was determined that I had torn my meniscus. I apologize to my friends in Rotterdam and Dubai, as I was very much looking forward to playing those events. While this is an unfortunate setback, I am encouraged and grateful that my doctor said the procedure was a success. I am looking forward to attacking the rehabilitation process this afternoon with my team and working hard to get back out on tour as soon as possible. Thanks for all your incredible support. I will check in with all of you soon.
Get well soon Roger!!!!