Surgery For Lateral Collateral Strain?

I had an MRI 8 months ago on my Left Knee. It showed that my Lateral Collateral Tendon is strained/sprained (not sure which of the two), and I have fluid on the knee. I have been receiving steroid injection into the knee every month, because the knee hurts me so bad. The shots use to help every month. Then, they only help for about two weeks. Now, the relief from the shots only last a few days. I am on Hydrocodone 10mg/325mg, Celebrex 200mg, and Tramadol 50mg. My doctor called me in oral steroids, and they help, but I know that I can't live on them. Is there a surgery that can be done to fix the strain/sprain? I am to the point of having the surgery, if it will fix my knee, and make the pain go away. I can't take the pain anymore. The tendon is not cut or severed its just sprained/strained. Is there a surgery to fix it? (only medical educated/personal experience answers please)