Hi Sohail,
Well, you're doing pretty well then. Your body is demonstrating resilience and to me it appears you're knee is going through the healing / reinjury cycle.
No pain is a great sign. But, just because the pain is gone doesn't mean you are even close to healed. I'm not sure if you've looked at our Healing page (
http://www.kingbrand.com/Healing-Home.php) but it nicely summarizes what is happening in your knee. Even when the pain is gone, your meniscus will still be mending itself for probably 2 years given what it has been through. And that is if you really minimize the reinjury component.
Even though the pain is gone, I can't stress enough the value of taking the load off your knee and giving it more opportunity to heal. Cutting back on activity is most effective. But if you're determined to stay active, I think a properly fitted brace that offloads your meniscus during activity is a good call in addition to your regular BFST treatments.
Definitely keep up with the BFST for months, even if you don't feel pain again. If you are going to be active, give yourself a treatment before you take up the activity to increase the blood flow in your knee. This can go a long way towards preventing reinjury. But BFST alone is not a guarantee - you still need to respect your injury. Please go easy on your knee even if you don't feel pain.
When you do feel pain, you can be sure this is a signal that you re-tore your tissue again, if even slightly. Every time you do feel pain, even if it is from something minor like a little twist, that is a backwards step in your healing process.
I agree with you on the Arthroscopic Surgery. They'd just cut away some flaps of meniscus hanging off the ends and you'd have less meniscus to work with. In the Healing page you will read about the stage of healing where your body grows tissue that shrinks and pulls the jagged edges of your tear back together. If that part of the healing cycle is successful but you have cut back the fringes, what is there to protect the outer edges as the inside becomes stronger? The Athro procedure is something you do if you accept that you are ultimately going to do the knee replacement and just want to buy some time.
As for the total knee replacement, it's one heck of a procedure but it sure does work well. The artificial knees work exceptionally well and all your pain will be gone (because that part of your knee won't exist any more as living tissue). I'm actually a fan of this route if the damage / degeneration becomes irreparable (a point it doesn't sound like you are at). If you ever get to this point, select your Surgeon and parts carefully. All components are not created equally and you can get premium parts that perform much better than others.
Good luck with the healing process and remember to give your knee a rest and respect the pain!